Understanding margin trading

I'm trying a margin trade (SOL/USDT) to understand its mechanics. I thought I understand the long and short trade but apparently thats not the case.

1. USDT balance only (No SOL) : 37.36 USDT
2. Opened a 5X long position, buy/borrow 1.7 SOL (max) at $100.46 = 170.78 USDT
   1. Limit + repay $102.5 , SL $ 96.50
3. Closed position (limit hit) + repay at 3 mins later at $102.50 = 174.25 USDT
4. Now balance is 36.88 USDT

I'm figuring out why is this a loss when I thought it should be a miniscule profit at least. Is it because of fees? Closing amount is too small?