I also posted this in low stakes but perhaps also interesting to hear from other players how they beat the lower stakes by, for example, playing more tight.

This is what I found on-line:

"How Should Rake Influence Your Decisions?
Simply put, higher rake lowers your EV (Expected Value).
How does this affect your decisions? In a nutshell, higher rake forces you to play a tighter style of poker.
This means that all those marginal postflop calls become folds. Moreover, this has an effect on the preflop ranges since those marginal open-raises, calls, and 3-bets depended on those marginal value bets, bluffs and calls to be profitable.
Consequently, you have to play tighter preflop and postflop."

Bringing it to where I play...where I play, 10nl is 7.5% rake with a max of 1 euro. 20nl is a 5% rake.
I really dont understand this rake stuff, to give some information from sessions I ran:

Last session I lost 1.70 euro and paid 1.87 in rake.
The session before that I won 15.53 euro and paid 4.48 in rake.

Since I started playing poker again (around a month ago) I played 16k hands, I lost 20,27 euro but I seemed to have paid 148,76 in rake.

Two sessions are the ones where I won way less than got rake for :
4,75 but paid in rake 8,96
2 euro but paid 7 euro(!!)

How is that possible? To have paid more rakeback (double and triple) then I won?

I also don't really understand why a tigher range is needed to beat the rake. Both pre flop and postflop.