That's about what I figured. I'm not that great with strangers, and English is my second language. I've tried other squad based games that rely on voice comms to be enjoyable, and I only really enjoy them when playing with a group of people I'm comfortable with.
You would be surprised how much you can communicate by just pinging stuff. I've had many missions with randos where a single word wasn't spoken, but we were all actively pinging high priority targets and putting markers on the map for our intentions.
It's really easy to have people join your game, or for you to join others. Also, it's not terrible playing solo either. I'm really enjoying it both ways. Feel free to add me on steam (same name) if you're on PC, or if on PS5 DM me and I can send you a friend invite if you want to team up and spread some democracy.