If you’re not super computer savvy and are downloading files from random websites (most people won’t unless you are pirating stuff) one thing I’d recommend is this website
https://www.virustotal.com/gui/
You can upload files and links to it and it can detect malware.
The TIL comes from the fact that if you are downloading a zip file, just because the folder is marked as having no malware, doesn’t mean it’s safe. When I unzipped it I scanned one of the files and that contained malware.
I was trying to download an old version of a sims mod ffs. Imagine the stress over something so stupid. Didn’t open the files and sent them straight to the bin, then deleted them from there and my computer says it’s fine.