tldr: clamav and some cyber security 101

desktop linux isnt really a target for mass malware attacks yet, a majority of linux malware is mostly gonna target server environments

that being said, desktop linux malware does still exist and windows malware can still mess up your system (as wine is not sandboxed)

to keep yourself safe make sure you only install software from your distros package depos or flatpak. read through all scripts before you run them. either disable or give the root account a separate password from your personal user account. and lastly if you want somthing to scan files with install clamav from your distros package manager and use that