Can’t load into some worlds

Some multiplayer world I can load into and some it says lost connection I’m guessing it’s my WiFi cause I used all my high speed data I’m not for sure.

Wait, are you using WiFi or cellular data?

I’m using Wifi

You could test this by using a different wifi network.

No I didn’t I’ll try that

Usually i cant load if i’m using bad wifi, e.g shopping centre wifi.