There was a post only yesterday (https://hexbear.net/post/9629021) with a similar experience but in a different game. Sadly shooters attract a certain type of person and probably even more so on console :(

Halo of Duty?

It’s not as easy to answer as all these comments suggest and especially when it come to contact with family and friends. Honestly you’ve done well to get some to switch but I would personally keep WhatsApp for now as backup and see how it goes with Signal.