I did what you wanted and even more
1. FRST with your fixlist
2. SURT log named CheckSUR - avastproteon.log
3. Then I came up with the idea of ​​disabling Avast self-defense module and I ran SURT - log CheckSUR - avastproteoff.log
4 SFC - without errors
5. After reboot, Avast does not work
6. I launched WU and installed the last monthly patch KB4457144
After restarting the old story - windows does not start and the system repair starts. I have restored the restore point created in step 1
7. I have repeated steps 1 and 2 - fixlog.txt, checksur.log
Now in fixlog it writes that no keys were found for removal, but I assure you that they were found and removed the first time. The first fixlog has been overwritten. And present checksur.log is identical to CheckSUR - avastproteon.log
We can safely assume that the system is at the stage of step 2.
Avast has only been installed for 2 weeks, so this is not the main reason.
I am beginning to doubt that it is possible to fix this problem.