If I manually change my DNS setting in the router or in Windows settings from the provider's one to, say, 18.104.22.168 by Google - will it mean that my ISP has no idea which sites I am going to? Maybe it is possible to figure out where I am going to just by analyzing my traffic?
And 1 more question. If my DNS is manually changed and I use HTTPS, then the ISP has no chance to learn what I am doing on the Internet? Where I am going to, what I am posting etc.
Asking because my VPN connection shut down due to my mistake and I visited several pages without VPN connection, but through HTTPS and with a changed DNS. So I am a bit nervous, although the site I went to was a site of a VPN provider only Not going to make my ISP know what I am doing on the Internet.