becuase of that dont raise or play too aggressive with it.
Well this is probably your problem. AK excels in an isolated pot (max 3 way and ideally HU) and in order to isolate you have to raise an appropriate amount preflop.
If you aren't sure how to play AK, then you can just follow generic advice, which should work ok. Raise enough preflop to try and get only one caller (so if you are on the button and have 3 limpers before you then you might pop it up to like 8x BB or something but if you have no limpers before you then 3 or 4x BB is probably fine). If you miss the flop you can throw out a c-bet to take it down after the flop if it is a 2 way pot, but the important thing is to be willing to let the hand go if you miss the flop and meet resistance. Isolating greatly increases the chance that your one opponent will miss, whereby you pick up the pot whether you hit or miss, and it greatly increases the odds
that when you hit TPTK it is the best hand (not necessarily the case in a 4+ way pot)