Boot time is very slow

I recently installed Ubuntu 20.04 and it is super fast on my PC. It is not the dual boot. My PC specs are:

CPU: Intel Pentium E5700@3GHz
Graphics: Intel G41(Onboard Graphics)
HDD: 250gb
Ram: 4GB + (4GB Swap)

But the boot times are very slow. It takes about 1 min to boot. At first it was about 30sec but now it is almost 1 minute. I checked boot time with systemd-analyze time and it gave me these results:

systemd-analyze time
Startup finished in 5.929s (kernel) + 51.893s (userspace) = 57.822s
graphical.target reached after 51.826s in userspace

And I did check with systemd-analyze blame and it showed like this:

systemd-analyze blame
32.833s plymouth-quit-wait.service
24.428s apport-autoreport.service
11.315s dev-sda7.device
7.112s accounts-daemon.service
6.533s dev-loop8.device
6.489s dev-loop3.device
6.415s dev-loop4.device
6.050s dev-loop0.device
5.991s dev-loop2.device
5.534s dev-loop1.device
5.332s dev-loop5.device
5.055s dev-loop6.device
4.944s dev-loop7.device
3.806s avahi-daemon.service
3.625s switcheroo-control.service
3.613s thermald.service
3.515s systemd-logind.service
3.513s wpa_supplicant.service
3.079s ufw.service
2.880s gpu-manager.service
2.688s snapd.service
2.652s udisks2.service
2.367s rsyslog.service
2.327s grub-common.service
2.252s e2scrub_reap.service
2.237s preload.service
1.855s systemd-udevd.service
1.629s grub-initrd-fallback.service
1.615s apparmor.service
1.350s systemd-modules-load.service
1.348s gdm.service
1.260s fancontrol.service
1.097s systemd-tmpfiles-setup.service
1.069s systemd-resolved.service
1.019s lm-sensors.service
1.004s systemd-sysctl.service
987ms systemd-journal-flush.service
935ms systemd-tmpfiles-setup-dev.service
895ms systemd-journald.service
801ms systemd-random-seed.service
781ms fwupd.service
761ms systemd-timesyncd.service
686ms upower.service
537ms plymouth-read-write.service
515ms snap-core18-1705.mount
489ms keyboard-setup.service
456ms systemd-sysusers.service
412ms snap-core18-1880.mount
398ms systemd-udev-trigger.service
379ms kerneloops.service
372ms snap-gnomex2d3x2d28x2d1804-128.mount
355ms snap-gnomex2d3x2d34x2d1804-24.mount
341ms systemd-remount-fs.service
318ms snap-gnomex2d3x2d34x2d1804-36.mount
315ms pppd-dns.service
305ms [email protected]
230ms snap-snapx2dstore-415.mount
222ms [email protected]
220ms NetworkManager.service
219ms polkit.service
188ms console-setup.service
173ms systemd-rfkill.service
168ms snap-gtkx2dcommonx2dthemes-1506.mount
168ms snap-snapd-8542.mount
131ms dev-mqueue.mount
131ms systemd-update-utmp.service
130ms sys-kernel-debug.mount
129ms dev-hugepages.mount
129ms sys-kernel-tracing.mount
128ms snap-snapd-7264.mount
120ms kmod-static-nodes.service
93ms dev-disk-byx2duuid-ee5aecd0x2d8f8bx2d461cx2db8e0x2d401f0dd6f584.s wap
86ms plymouth-start.service
80ms colord.service
78ms hddtemp.service
62ms setvtrgb.service
57ms systemd-user-sessions.service
31ms systemd-tmpfiles-clean.service
25ms [email protected]
16ms systemd-update-utmp-runlevel.service
14ms alsa-restore.service
10ms rtkit-daemon.service
9ms sys-fs-fuse-connections.mount
4ms sys-kernel-config.mount
4ms snapd.socket

Here the critical-chain results also:

systemd-analyze critical-chain
The time when unit became active or started is printed after the "@" character.
The time the unit took to start is printed after the "+" character.
graphical.target @51.826s
└─multi-user.target @51.826s
  └─kerneloops.service @18.921s +379ms
    └─network-online.target @18.847s
      └─network.target @18.847s
        └─wpa_supplicant.service @15.333s +3.513s
          └─dbus.service @15.088s
            └─basic.target @14.995s
              └─sockets.target @14.994s
                └─snapd.socket @14.990s +4ms
                  └─sysinit.target @14.898s
                    └─swap.target @14.898s
                      └─dev-disk-byx2duuid-ee5aecd0x2d8f8bx2d461cx2db8ex2d401f0dd6f584.swap@14.804s +93ms
                        └─dev-disk-byx2duuid-ee5aecd0x2d8f8bx2d461cx2db8e0x2d401f0dd6f584.device @14.801s

So how can I reduce my boot time?

Edit: Output of dmesg | grep -i error

dmesg | grep -i error
[    0.761799] ACPI BIOS Error (bug): AE_AML_PACKAGE_LIMIT, Index (0x0FFFFFFFF) is beyond end of object (length 0x4) (20190816/exoparg2-393)
[    0.761843] ACPI Error: Aborting method _SB.PCI0.IDE1.GTM due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[    0.761850] ACPI Error: Aborting method _SB.PCI0.IDE1.CHN1._GTM due to previous error (AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[    0.798345] RAS: Correctable Errors collector initialized.
[    9.912364] EXT4-fs (sda7): re-mounted. Opts: errors=remount-ro
[ 3014.858735] mt7601u 1-6:1.0: Error: MCU response pre-completed!
[ 3017.471090] ACPI BIOS Error (bug): Attempt to CreateField of length zero (20190816/dsopcode-133)
[ 3017.471122] ACPI Error: Aborting method _SB.PCI0.IDE1.RATA due to previous error (AE_AML_OPERAND_VALUE) (20190816/psparse-529)
[ 3017.471131] ACPI Error: Aborting method _SB.PCI0.IDE1.CHN1.DRV1._GTF due to previous error (AE_AML_OPERAND_VALUE) (20190816/psparse-529)
[ 3017.473543] ACPI BIOS Error (bug): Attempt to CreateField of length zero (20190816/dsopcode-133)
[ 3017.473569] ACPI Error: Aborting method _SB.PCI0.IDE1.RATA due to previous error (AE_AML_OPERAND_VALUE) (20190816/psparse-529)
[ 3017.473577] ACPI Error: Aborting method _SB.PCI0.IDE1.CHN1.DRV0._GTF due to previous error (AE_AML_OPERAND_VALUE) (20190816/psparse-529)