I'm having the same problem. I have multiple other devices on this wifi network. I have rebooted the phone several times. S10e fully updated. It will connect to other networks (starbucks, etc).
Same issue with my Samsung S9. Occurs intermittently with multiple wifi networks.
After the last update, I've been having this issue, in addition to receiving connection errors when going into apps whether I'm connected to mobile network or wifi - not sure if it correlates.