iPhone 11 Pro not charging

I do use my IPhone all day and its currently on the most recent version. Since February, my IPhone isn’t charging properly. At first, it didn’t bother me because after waiting a little bit, it goes back to charge again. Just recently, it hardly charges. I tried some methods from Apple official website, but they were unhelpful for me. The only way for it to charge is when I’m not using it and let it charge, but it takes so much time and usually it happens when I go to bed.

I was wondering if someone experienced my same problem and if there were other method to resolve it, or should I just go to an Apple store.