Hello everyone. I was playing poker for 5 years untill 2017 and I started again this year. I played 30k hands and -11bb/100. Ok my hand sample size is small but is it normal -11bb/100? My stake is nl10. I want to climb to nl100. I want to study and want to improve my game but I don't know where can I start to study. When I hand review, i see a lot of bad beats but maybe my style is bad I don't know. Can you advice for me ? Thank you now.