So my Android phone won't charge or charges very slowly

People have mentioned lint so that could be easy to rule out after you make sure it's clean. Does it die faster than it used to? It's common for phone batteries to start dying after a few years. Last time I bought a new $50 battery on Amazon that came with the mini tools to take your phone apart. I used a heat gun to help separate the adhesive around the edges, took it all apart, then put it back together with the new battery. Then months later my screen started going out too & I knew it'd be dumb to spend anymore money on a dying phone 😢

It might just be time to replace it, sadly. Phones aren't built to last long these days