Use Lemmy 😂
If you just want to read you also could use libreddit.
You can also use a mirror. Teddit and LIbreddit are great.
If you’re running uBlock Origin, go into the addon settings, go to Filter Lists, and turn on the Annoyances filters. They’re not on by default, but should get rid of these kinds of “known” popups across popular sites.
Specifically, it’s the Easylist - Notifications filter that seems to do it for Reddit.
I think old.reddit.com bypasses it.
Not responsive of course, but servicable
For now. There was a reddit post last week that showed reddit was trialing blocking all mobile traffic that doesn’t come from the app. Using “desktop” mode in most browsers won’t save you either as the user agent still leaks that it’s a mobile browser.