How can I fix audio cutting out on iPhone while streaming video?

I keep having an issue with the audio cutting out briefly every few seconds when I’m streaming videos on my phone.

I’ve tried restarting my phone multiple times and cleaning up my storage (now have >3GB free space) and it hasn’t fixed the problem. It’s happening on YouTube when streaming in different browsers, and on video streaming apps.

This seems to happen after I take photos of books I’m reading to highlight text. I thought it was a storage issue as that’s what’s fixed it in the past, but I have lots of free space. My phone in general is slow. When I listen to podcasts it takes several seconds after hitting pause/play to get a response.

[Re-Titled by Moderator]