Hi.
Nowadays I use a Laptop rather than a PC. with 16gig Ram. 250 SSD.

PAID. “Bitdefender Total” recommended by my bank a decade or more ago.

NEVER had a boogie. blue screen. Nuttin’. In all that time.
and I “acquire” movies etc from all over the world. so go in some naughty places.
I’ve watched movies they have yet to release in this country yet, by months.

Also. Every 6 months or so.
I keep ALL files. except OS. and Bitdefender.on a 2 terra 7200 external HDD.
with a clean copy of, from supplier on a USB.

I disconnect my 2 terra hard,
Then Back to original. ALL emptied. The Lappie.

Insert a loaded USb with everything on it. WIN 10 Security, etc.
Reconnect 2 terra. and off we go again.
Takes about 2 hrs.

I go all over the net. and (so far.) still have a clean 14second start up computer.
PS. I,ve been using these since 286\386, pre WIN.
Used to assemblethem.

Free is ok. BUT. a reputable PAID security. has 24hr Back up…
To me. Well worth the few dollars.