Which can be done by going into settings, and then pressing connections. I'm not entirely sure how to do it because my galaxy S10 does not support 5g.
And it may also be fixed in an upcoming update
Same issue. I lost any mobile connectivity (5G, 4G) after leaving WLAN or go into buildings. But not always. But it wont reconnect itself.
I have to go to flight mode and back again to get a good connection again. But I think this cant be a solution for long. It started after update to Android 13.