I am able to play hl1, blue shift, and opfor as well as CS on the ps vita due to an android wrapper of this engine. It is great except the save/load times are very long (30-60 seconds) and the levels have many load triggers.
My HS CS class in 2014 was like this. It was wonderful because it took away the incarceration feeling of normal public school. If I did the work faster than everyone else correctly, I could go and do what I wanted in the school, which motivated other students to finish and motivated me to finish first. I wish other classes were like that.
The only thing close in college was profs who would let you test out of classes, and work on a self study project for the class, I loved that.
I wrote this[0] post on how I use OBS to share a 1080p sized portion of my upper left ultrawide monitor through Microsoft Teams. If you can share just a specific window, then this should work with google meet.