WiFi Connection Issues that needs urgent solution

Why do I have issues staying on a WiFi network? My phone is connected and then like a few minutes later its disconnected and this cycle continues with every WiFi network am connected with.

crwdns2893858:0crwdne2893858:0 crwdns2893862:0crwdne2893862:0

crwdns2894050:0crwdne2894050:0

crwdns2889612:0crwdne2889612:0 0
crwdns2892346:0crwdne2892346:0