OP is right that Apex's matchmaking is horrible and IMO is the worst it has ever been this season. OP should go play something else that is fun and doesn't tick them off . . . I don't blame them.
If you are average skill at best, the matchmaking for solos is bad but it is even worse for premades. I don't know how Respawn measures 'skill' in their algorithm & they won't tell us, but whatever they use doesn't match what my eyes tell me in the games I play.
When you roll up on a squad and they hop around like they are on speed and destroy you in milliseconds, you know you are out your league. Then you check the Death Summary and see that your killer has tens of thousands of kills and millions of points of damage and that just rubs salt in the wound. Either that or they are a level 10 smurf. After multiple games like that in a gaming session, no wonder people rage quit and never come back.