AVAST is only hogging resources and taking your money. You really do not need any anti-virus programs if you have common sense. Just avoid clicking on fishy links and do not visit obvious scam sites. I never had any malware but I recommend Malwarebytes if you want to run malware scans from time to time.
I have used paid as well as free version of AVAST. I first started using a premium version and when the software expired, I did not renew and instead started using the free version., I did not find any difference.