anyone else has issues with siri, their microphone and trouble watching bideos

I don’t know if it’s been since or before updating to iOS 15 but I had issues with siri, then my microphone, and then I had trouble watching videos through browsers. First off with Siri, they will not respond to me whenever I say “hey Siri” or use my button anymore. I did everything from the articles about fixing them before I came here. I restarted my phone, restarted it, looked around the settings, turned Siri on and off, tried to talk into voice memo and even use camera to recognize my voice but even that didn’t work. The issues here is Siri worked on me for a good time until last week around the time the new iOS update came out (ios 15)

Every time I try to use my mic to try to fix Siri it won’t work because apparently it’s being used somewhere else? But I don’t remember having use my mic on any other app and all tabs of the recent apps I used were closed. When I record videos the audio isn’t there either even in voice memos it doesn’t work. When I try to call someone there or when they call me the call ends immediately after picking up. I’m thinkings it mic because when I have my AirPods on all of a sudden I can take calls but Siri still can’t work on me, nor do the voice memos work or and neither does sending voice messages and the videos still doesn’t record audio. As for the video, when I click on it to play on the browser the screen (when I can’t watch it through an app) goes black. I can still hear the audio but the screen is black and just like the Siri and microphone situation I tried everything I could from the sites that have to do with this kind of support. I don’t know what else to do so I came here writing this hoping there’s a solution because I can’t really afford to get a new phone (financial reasons) and don’t know where to get it fixed since i’m in an isolated town and there’s barely any repair stores and trustworthy people who can fix phones nearby.