Opera Browser is one nifty and safe desktop/mobile browser, but it is not that popular considering what it offers to the users. One reason is that it, unlike other big browsers, doesn't have all those cute extensions.
But, the thing is when you install Opera browser you still can use all the extensions form the Chrome just by visiting the Chrome extension page. Opera will install any extension suitable for the Chrome and you can as easily use it on the Opera browser.
I assume that there are some that are not compatible, but most of them are so in case that you like Opera Browser because of the features and convenience now you know how to install all those interesting Chrome extensions.
The same works for Dissenter, Chromium and Brave.
The good thing about Opera is that the browser will notify you in case if an extension uses more privileges than you are ready to grant before you install it. When you click INSTALL, browser will explain all the things you are granting to that specific extension, including tracking, cookies, authentication to do something, to read data from your disk and similar. Usually if an extension asks to read data from the localdisk, I do not use that one but find an alternative. I find this feature extremely important and valuable.
You could just install chromium.