How can I fix my internal front camera?

I've had a lot of problems with my a51, I recently replaced my screen myself, while doing so, my ear speaker don't work, I popped the side of my battery, so it progressively got worse ! 🙃 Through taking my phone apart and putting it back together so many times, my internal front camera detached from itself I guess I could say, I can't find anything on this, help please !! I also replaced my battery today, and everything is so far so good ! I cannot figure out if or how I can fix my internal camera ! Thank you!