Well I don;t see any posts saying it’s fixed, so first off do you have internet (wifi or data) connection? Is it just a couple sites not working, but others do?
Try a different browser. Brave is a pretty good one that I actually use as my daily phone browser.
Otherwise you can potentially download the previous firm/soft/whatever -ware and try to force the phone back to a previous version.
Finally, depending on technical know-how, root your phone and try installing a custom ROM. This WILL DELETE your files (maybe not your sd files, depends on process), so make sure you have everything backed up. You will generally get a cleaner, smoother, faster phone with more (or less) options and whatnot.
Yes, have both wifi and internet....its just a few websites NOT working...FR being one. Not going do a Root. May try Brave browser. Thanks.