Matchmaking system?

In operations mode, what is the algorithm for matchmaking? I always end up the highest rank in my squad against a DF Pinnacle squads lobby.

This it not the first time, but I just lost a game against a DF Pinnacle squad while my team was Gold/Plat with 0.2 KDA.

Also, why isn't there a system to make squads with at least nearby gear value, cause its completely useless to join a game with red armor when my other teammates are without an armor, zero communication, no mic, and everyone is going in a random direction.

This game is just not enjoyable anymore as a Solo player...