It's best not have any violations to the computer security.
Antivirus software, firewall, secure boot, etc. are each steps to make the home computer environment more secure.
Hackers are always looking for new methods to get data from computers.
So it's best to make free backup images.
Then when you perceive any problems you can restore an image.
This solves problems for malware or ransomware in less than one hour.
These are some free and pay software:
Acronis, Aoemi, EaseUS, Macrium, Paragon, etc.