You clearly have no idea what you are talking about when it comes to Ranked mode in Apex. Also the player base in this game is pretty damn big. Its not as "small" as you think it is. If Apex had a "small" player base then they would not have won best multiplayer game of the year. I do agree with you about deranking. If you are not good enough to maintain the rank that you are then you should be deranked until you can maintain a higher rank.
You cant rly get carried in ranked mode because the RP system is based on your own contribution. There is no way for you to get carried by good players. If you joined an apex predator you would be thrown into his rank pool which means you will get destroyed instantly. The only way you can get RP if you are being "carried" is by getting the crumbs for squad position and that's not so simple either and if you plan on playing like that then well...have fun maybe getting gold rank. If you are lucky.
Bronze silver and gold is where most people end up. Plat and up is where the grind rly starts.
This was for season 1
Ranked
The distribution breakdown was 5.1 percent at Bronze, 40 percent at Silver, 35.7 percent at Gold, 16.8 percent at Platinum, 2.1 percent at Diamond, and a mere 0.2 percent at Apex Predator. The majority of players made up the Silver and Gold ranks
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Also i understand it can be frustrating to get rolled constantly but that's how you learn. When i started playing apex i got dominated as well and im pretty sure most other people did too. Its frustrating but that is how you learn and get better.
in other words, "Get gud"