Iphone 11pro not responding to touch - Unresponsive touch

It all started around january, It became unresponsive for a few times but it went normal when I close it. the third time that it got unresponsive, my dad went to a technician and he do a factory reset. It worked for a couple of hours, but when my dad went to check at it once again, It became unresponsive. for a few days it just randomly can touch, but only for a few minutes. my phone also have issues with the battery; when its 80%-60 it shutsdown randomly then it turns into 10%. I also bought a new charger, Which is I regretted. Before, I was using a third-party something adaptor and the original cable. for a few months my cable got broken, and also is the screen itself btw in my setting, it has a Unknown part - screen. going back to the charger, I bought it on one of the apps - Tiktok I do not want to mention it, but it is a fast charger and for sure an unoriginal one. When I knew it was probably the charger, I used my old adapter(third party one) then the new chord. It worked twice, but currently now it stopped working. Could anyone help me with this please ?😩