So it turns out @TeamYouTube are just hiding my videos from subscribers and THATS why no one is watching. I literally almost quit because of it. Had a mental health episode and felt like a walking failure for days but yep, it's just YouTube being a failure instead. SORT. IT OUT.
I can't contact my subscribers as the majority aren't seeing my community tab posts either
but if I check my 2nd channel, I have notifications fully on for my main channel and I only get desktop notifications, not mobile. However 80% of my subs use mobile so it's pointless