iPad internal microphone works for camera app, but not for zoom, GarageBand, voicememo

says it in the title…the internal microphone on my 8th gen ipad works for the camera/video app (crystal clear audio), and Siri can hear me just fine, but when it comes to GarageBand and zoom and voicememo, it doesn’t pick anything up but muffled fuzz. The Zoom audio was working up until a few weeks ago, I suspect it stopped working after I updated my iPad…..but it hasn’t worked for GarageBand since I got the device in November, which I didn’t think about too much seeing as I rarely use it, but when zoom was affected I remembered the GB problem, then I went on to test voicememo and the camera audio. I saw Zoom had an update so I thought that would fix it, but no go.