This has nothing to do with not wanting you back. If you have to sign in every time it means you did not tell your browser to stay signed in. If it is the case you have to sign in with every change, if you switch from posting to commenting the problem lies with you. So check your browser at the moment you sign in and give that ✅ to stay signed in. It should show underneath your password.

If your internet connection is not* steady you can be logged out too simply because you lost the connection, which you will not notice if you stay on the same page. If you switch, for example to commenting or someone else's account you will notice it, but if you clicked "always stay signed in" your browser will automatically sign in again.

In short: the problem lies with you. Your WiFi, or your browser or both.