New Connection issues

[Azipos]

Hello.

My problem isn't as bad as annoying. My Redmi 5 Plus disconnects most of apps every 10 or 11 minutes and then I have to restart my Wi-Fi/data connection. I've been handling it for two weeks, but now I can't.

Thx for all your answers and advices!

 

[Azipos]

My mobile's running on Android 8.1 with MIUI 10.2.3. Sorry that I wrote it so unclearly, it's, of course, disconnecting internet complaint. I really don't know, if it's a bug or I messed with something. I just don't know what to do, because it's really annoying, but I don't want to reset entirely phone.
Thanks.