Hotspot connection when streaming breaks off why?

I sometimes stream on twitch via my mobile data. I open a hotspot and connect my PC using a WLAN stick. Unfortunately, the connection always breaks after almost an hour and I have to reconnect my PC via USB tethering it has already tried and DSL is here unfortunately no way someone can tell me why the connection always breaks is it on the cell phone (Huawei p30 pro) or on the WLAN stick

PS: With normal surfing, the connection only breaks every 4-5 days

Could it be that the hotspot has a limited life?