AVAST program auto removed/deleted upon restart out of nowhere..

Hello! Kindly help me regarding this thing. This just happens today since morning… My Avast program (Avast Premium Internet Security) was deleted after I boot up my PC this morning. Then I realized Windows Security and Windows Update are not working (Windows Defender cannot be seen while Windows update cant update anymore).
Here is the screenshot of the Windows update and Windows Security:

https://i.ibb.co/3S9JVCY/1.jpg

https://i.ibb.co/zsMpWc0/2.jpg

I did reinstall Avast and activated back the Premium Internet Security. It does detected these infected files:

https://i.ibb.co/Q8WV6qp/image.png

Now, I did a SYSTEM RESTORE to an earlier point (one week before) and I check Windows Update and Windows Security back to its working state… However, few hours later, I did restart my PC and
the AVAST program is again removed automatically (wth happened again? I did nothing!) So I reinstalled back Avast and it detected these files:

https://i.ibb.co/SmttmTc/image.png

KINDLY PLS HELP ME? I dont know where this came from… This just happened out of nowhere just today >:( :-\ :-\ :‘( :’(

Any Avast moderator/support admin who could help me? Im so disappointed with Avast

BUMP! NEED HELP!