that is one of your biggest leaks. These two hands show that you can't outplay 75-80 % of 2nl players ....these are the exact same leaks that most other 2nl players have.
They are afraid to bet there strong hands either trying to get tricky and letting opponents draw cheaply or thinking that they won't call bets. What are your stats ....when you say you play 5 hands , is that 5 out of 100 i.e a super nit so people realize you are only playing the premium hands preflop and refuse to payoff .
Why do you want to search for tougher opponents, all the better players are trying to find the weak players and take their money before the other regs get it. You don't make your profits off good players , you make your money from the bad players who over value their hands, can't fold their premiums , chase their draws without odds
, play trashy hands. sall 3bets out of position etc etc .