I fell less alone 
I have issue with sleep and mt7921e too but not exactly the same sa you do.
You saw difference after upgrading your bios ?
you can watch Bluetooth is not AutoEnabled - #10 by koshikas for my issue with the mt7921e card if you want.
For the sleep , it don’t wakeup instantly like you but sometime I can’t wakeup at all, and its very long to wakeup from sleep (deep or s2idle) (about 10 seconds).
edit : just updated my bios (using windows), didn’t think it was going to erase bios settings and reset efi partition