Most of the strategy I feel doesn’t apply, and it cuts between players so fast that it’s hard to learn general movement. What should I pay attention to in order to improve?

Met these really cool people in a game and we played different game modes for 23 rounds; haven't had this much fun in a video game in a while... and sorry for the low res image https://preview.redd.it/d4rs0iunamb61.jpg?width=1920&format=pj...