@leocg
Here need to take a second computer and install Opera on it, but I won’t do this. I'd rather switch to another browser.

@leocg
I said: In other browsers everything opens fine.

Opera does not open some sites.

At the same time, they can be opened under VPN.

They can also be opened from other browsers and devices with same wi-fi. The problem is in the browser.

I reinstalled and cleared the cache - it didn't help.

I also googled the problem and it’s not just happening to me (its russian).
https://forums.opera.com/topic/41717/не-открывает-некоторые-сайты