Casual Skill Assessment
First, create a standard skill evaluation value from lowest to highest for players from Platinum IV to Predator in the previous season. Do not include players below Gold IV as this will only result in errors. Use the low to high skill standard created based on the data from the previous season to determine the skill value for the current season. Naturally, all players who do not reach the skill evaluation value of Platinum IV will be in the lower tier.
The current skill assessment doesn't seem to assess skill, but rather past performance, so I don't think it's a skill value. And players who truly enjoy Apex don't want to be told they have the highest level of skill, they want to know how strong they are. Another thing to note is that when creating skill benchmarks, do not include CS players, because their skill level is obviously lower even in the same rank range.