I'd like to think I'm good with my money, but would like to do better

Currently I am a 25 year old E-3 living in the dorms, getting BAS. My car is paid off. Car insurance (might change due to location) and phone bill is currently being paid for by my parents.

Currently my bills:

Internet - $85/month

Car insurance - $110/month (when/if I start)

CrossFit - $150/month (trying to get back into CrossFit, as it was the only form of exercising that I really enjoyed and it kept my sanity when I was doing it)

Current money is looking like:

I'm currently contributing 17% into my TSP.

$35k in stocks

$6k in Roth IRA (maxed for 2021)

and $20 in savings (lol depleted this being home and PCS'ing to Hurlburt, long story). <- I'm looking to rebuild this, don't worry.

I literally don't buy a lot of things, at all (I save for big purchases typically). All my money goes towards food, but I am fixing that considering I started receiving BAS, so I am budgeting for groceries and only seldom eating out.

What can I do better here?