I just want to know if Avast Antivirus Free alone, is enough (or not) regarding anti-exploit and anti-ransomware security.
Yes.Avast Free Antivirus is good it has good anti-exploit and decent behavior blocker which stop any types of Ransomwares.If you want to stay protected pls make your [b]backup[/b].
[b]So no need of extra anti-ransomware softs and anti-exploit.[/b]Hope it will help.
P.N-Avast also has avast hardened mode.Set it to Moderate.In extreme cases you can set it to Aggressive mode but normally set it to Moderate. 