Power outage in different rooms In the home

Different rooms in my home will lose power at random times. Most of the time it is on the left side of the house where my children have their bedroom and bathroom. The circuit breaker never trips. However, once I turn off the circuit breaker for that area, wait a few minutes, and then turn it back on. Usually the light will be OK. Sometimes it will take longer for it to come back on. I had a electrician stop by and not return due to hurricane Laura. He thought that one of the 20 amp circuit breakers needed to be replaced with a Homeline 30 amp/120V/GFCI circuit breaker. This circuit breaker happens to control two of my children’s bedrooms. There is no single pole, 30 amp Homeline circuit breaker. I had another person replace the existing 20 amp circuit breaker with a brand new Homeline 20 amp/GFCI circuit breaker. Less than two hours later the power in various rooms shut off. The kitchen and laundry room were perfectly fine. But now my bedroom and bathroom went out which is located on the opposite side of the house. And two out of my four bedrooms for my kids power went out along with her bathroom. Plus the lights for the front porch and back patio. I flipped all the circuit breakers and they came back on a few minutes later.

The night prior, the lights in my kids restroom started to dim and come back on off and on prior to us going to bed. It was fine the next morning. Also, that morning the tv in the living room would randomly shut off and come back on along with the cable box. I’m afraid and have no idea what is going on. Any assistance would be greatly appreciated. Thank you for your time and help.