Yes, you can.

This is not the suggestion box forum, try there. Also, you can load just about any extension from Chrome into Opera with the Download Chrome Extension. Try that.

Try doing a portable install of Opera on the same system. Does it also have the issue?

Also I cant download any torrent with opera , like it does not have a built in torrent client.

That would be because it does not have a built-in torrent client. The last version to have a built-in client was Opera 12. When they rebuilt the browser from scratch for Opera 15 a torrent client was not included in the rebuild. Not enough people used it.

Some machines have scaling ramped up from the factory. Especially laptops and tablets. Check you scaling settings in Windows and see what they are.

Edge and Opera use different versions of Flash. Just go to the Adobe Flash website while inside of Opera and download it. That should fix the issue.

Using a VPN and using Google is counter productive. The VPN is for enhanced privacy. If you don't want people tracking you, don't use Google.

Does it work in a private window?

Your bookmarks are stored in a file named bookmarks inside Opera's profile folder. It is generally located in C:\Users\USERNAME\AppData\Roaming\Opera Software\Opera Stable. You can confirm this by opening Opera, going to About Opera in the Opera menu, and reviewing the details in there.

I work for an IT company. We google stuff a lot. Even we get crap from google about unusual traffic because of the volume of weird searches. It is probably a similar issue.