I have experienced a situation where the bottom charging port didn't work, but the side port did. Sometimes the bottom port worked, but the side port didn't, and there were even times when neither worked. During these times, the charging was intermittent, and when I checked using the Devs Check app, it showed negative amperage during charging, which caused the interruptions. Also, the battery charging was very slow even though it indicated 65W charging. When I used the Devs Check app again, I found that there were two different types of charging: USB charging and AC charging. In some cases, I experienced USB charging, which caused the phone to overheat and the charging process slower. However, when the charging was switched to AC, the speed returned to normal.
If you experience your phone not being able to charge through the side or bottom ports, you can try restarting your phone as usual (not a factory reset) and then try charging it again with the same charger to see if it works.
If you experience slow charging, you can try using the Devs Check app (this app is only used to see the type of current from the charger) to check if your phone has a different type of charging. If your phone is charging via USB, you can try unplugging and replugging the charger a few times until it shows AC charging. If it is charging via AC, the battery will charge faster.
This might just be my opinion, but I hope it can be of some help.
