You have an A/C and “a few other things”
Let’s say your A/C unit is 1500 watts. That’s 12.5 amps. Add a microwave, refrigerator, vacuum etc. They draw a lotta current. A 60 watt light bulb is 1/2 amp. If you’re at 20 amps a new breaker or new panel won’t solve anything. You need to check your current load.
