The apparel box's are a joke
I completely understand the frustration, but they are random for everyone - the only way to "get the points" is to play a lot of rounds - it is why the coin games and the apparel - is clearly just one more micro transaction geared to keep people playing / using ball hits to earn something they think will help them.
A skilled player- can and will still win in coin rooms with absolutely no apparel - it is only in the higher stakes coin rooms where playing against equally skilled players you would start to see your opponent gain an edge with maxed out apparel.
WGT is a lot of things - but I don't believe they control who gets better or not - we control our own fate in that regard - and it depends on how much effort you put in or how natural the games comes to you. Some people are naturals - others - put in the work, and still others just play for fun.
-- I will point out that 60 coin games is very low for over 3 weeks of play going on 4. Some coin room players will play over a 1000 coin games a month... and that is why they have maxed out apparel.
If you don't play high volumne, it is a slow methodical process otherwise.