Antivirus/end point protection is covered fully in The Complete Cyber Security Course volume 4. Currently, the efficacy of antivirus is questionable. i.e. it doesn't stop many attacks! Personally, I don't use any on Windows, Mac or Linux and don't perform actions that can infect my machine. (The actions covered in the course.) But if you're on Windows and want an extra (but not reliable layer) of security, then you may want to go with an antivirus product. Windows 10 AV defender is ok, and it has sandboxing https://www.stationx.net/new-sandbox-mode-for-windows-10-defender-antivirus-heres-why-you-should-pay-attention/
Antivirus on Mac and Linux is currently not worth installing.
I don't currently recommend any product. I recommend doing your own research and watch volume 4. https://www.av-comparatives.org/dynamic-tests/https://www.av-test.org/en/