Matchmaking for Noobs Apex Legends

Me and my cousin have been playing Apex for about 2 weeks now. We cannot get better, because we are 10, 15 minutes into a match, then we get killed within 15 seconds, by some team with 1000+ kills and 100+ wins. Please tell me how TF I am supposed to get better at the game, when stuff like this happens. Either fix the matchmaking, or add a mode for noobs like me, to practice and actually stand a chance.