Crossplay struggles

Currently trying to matchmake my way into a game with my friend because crossplay just doesn’t really work - I made an Epic Games account to try and connect, and my friend made a PS4 account, but there was no way we could invite one another to a private match. I wish I could just play with my friends who are playing on PC. Does anyone have any idea what to do?

We’ve been trying for about 45 minutes.

I turned crossplay off…
controller has no chance against a keyboard and mouse…

Please have a look