It's infuriating as a solo player in ranked trying to grind to diamond. I got to D3 in the first split, but in this split, even when I'm in Plat 4 and solo queuing, my teammates are usually high gold/low plat, while 1 out of 3 games, the champ squad is master/diamond 3 stack. Ranked needs a better matchmaking system. I'm pretty sure most people playing ranked would rather prefer a more even playing field rather than trying to find the quickest match.
And don't even get me started on solo queuing in pubs, there are enough rants about that on this sub already. I hope Respawn come up with something to make the ranked gameplay better next season, Its too much of an uphill battle with not enough rewards if you don't have an effective squad, and with the splits and the season long dive trails, you don't get enough for the effort you put in.
Source: https://www.reddit.com/r/apexlegends/comments/iahdkl/why_do_i_get_put_against_diamondsmaster_squads/