You’d be surprised how caked a charge port can be, you know you’ve cleaned it correctly when the plug goes in all the way and doesn’t stick out a bit.

When it still doesn’t connect correctly and/or you feel play in de cable/chargeport, it might just need replacing.

Get a wireless charger if your phone supports it. It will likely be slower, but still work.

Then repeat step 1.

Note: cleaning didn’t work for my kids phone, took it to the store, they cleaned it out and it works since 1 year now.