No other devices except my own phone can connect to the hotspot

The problem is that when I try to share my hotspot connection, as mentioned in the title, no device other than my own phone can connect.

After a lot of effort, I deleted the Wi-Fi password, the one here.

When I started it, everyone could connect, but you know sharing an unsecured connection is very risky. And also, not being able to see who is connected is very annoying. Do you have any suggestions?