What wifi is it, wifi 6? If so I believe they'll release an update to fix the issue if its not a router problem, have you reset the network settings yet? I don't have wifi 6 & all's well on my device.
When you say Reset Network settings? Which are you referring to? Resetting the Router? If so yes If not what do I need to do please if you can help 🙏🏼?
I've had similar problems with WiFi showing "connected but no Internet" and the! Symbol next to the fan. I've got galaxy tab a8 10.4, this started after the android 13 update.. But just recently I've been receiving "WiFi provisioner" app update requests from the play store, I've updated the app and now I just get a disconnect once a day, so that's tolerable I guess. So obviously Google know it's a problem with their upgrade and are trying to fix it with having to do a complete software update....
Iv'e heard yesterday when reading sammobile that there appears to be a problem with some people accessing the WiFi and that Samsung had finally acknowledged they is a problem and therefore are working on a fix, it mentions to be having a WiFi router 6..check out his post as he talk about in depth. So your not alone regarding the issue.