Kile or any TeX software cannot find 'TeX Live' binaries (manually installed) when launched from graphical menu or launcher icon

For now I could solve the issue where Kile can find the Tex Live 2020 binaries (manually installed) when it is run from graphical menu or launcher icon. I am listing the two solutions I found (links are provided below):

1. Open Settings --> Configure Kile window. Click on the menu Build. It will list all of the known TeX tools. For example, select LaTeX. Go to the General tab and add the texlive binaries PATH in command field to include /latex, which will then look like this: /usr/local/texlive/2020/bin/x86_64-linux/latex

The above steps are repeated for each of the TeX tools we use frequently.

Once all are done run Settings --> System Check to see if Kile executes the LaTeX processes from the PATH assigned.

(Step 1 is explained in detail here).

2. The second solution is to edit the file /etc/login.defs:

ENV_SUPATH  PATH=/usr/local/texlive/2020/bin/x86_64-linux:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
ENV_PATH  PATH=/usr/local/texlive/2020/bin/x86_64-linux:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games

This solution was suggested to me here on raising a similar question for a TeX software (LaTexDraw). It too had similar issue like Kile.

I find Step 2 to work with any of TeX software (atleast for the two I have) where on starting it from graphical menu or launcher icon, it can locate all the latest LaTeX binaries.