Hello everyone, I am not sure if it is allowed to discuss stuff like that here, but I just wanted to ask for some advice.

After playing 50k hands on NL5, even though I feel like I am beating the stakes and playing pretty well, I am down an enormous amount of buyins.
I started wondering if in reality I am a bad player or is it just a very big downswing as my C All-In Adj says I should be down 11$ instead of 88. Is it a stat that may prove my losses are caused by a downswing ?
Also, my results on blinds are horrible. Does it mean I don't know how to play the blinds ?
Any suggestions what my leaks could be ?

I ran the Leak Tracker analysis and apparently, after all this hands, the only leak that the software has found is a bit too low AFq and CBet on the flop.

I would like to add that I've bought Poker Tracker after around 30k hands played so I had no reads on my opponents.
Since the day I've purchased it, I am down 16$ and my C All-In Adj says I am +7$ (18k hands).

Thanks in advance for all the answers as I am a bit lost and start feeling discouraged not being able to smoothly beat NL5.