Honestly isn't enough hands to draw anything meaningful apart from the fact that yeah you understand being tight and aggressive is the right way to go pre flop.
It's hard to draw anything from results when you struggle playing much. I think my first 40k hands or so this month were break-even even though i played well and got my money in really good a lot. So imagine that happens to you, you could play great and not be winning over years!
I think you should work on studying and posting hands more if you are a really low volume player, more beneficial when you can't play a ton i guess.