Prosze o sprawdzenie błędów!!!

proszę o sprawdzenie błędów w mojej pracy... Bardziej zalezy mi na błędach gramatycznych niż pisowni, gdyż i tak nikt ich nie bedzie sprawdzał :)

"In this days, belong to any organisations and clubs is very fashionable. The young people belonging to the clubs becouse they look for acceptance from people the same age. By the way, if they belong to, for example, a charity group, they help other people and learn new skills - so this is very profitable. Everybody knows that if teenagers spend free time in political group or sports club, they won't have a time to doing something stupid things. In my opinion belonging to clubs and any groups is very adventageous for young people although very often they didn't knows that. But if they doing something good only besouse it is fashionable, so this is have a sense??"

"In 'this' ('this' odnosi sie do l. poj a tutaj days - to l.mn THESE) days, belongING to any organisations and clubs is very fashionable. The young people belonG to the clubs becAuse they look for acceptance from people 'the same age' (mozna napisac 'their peers').
Everybody knows that if teenagers spend THEIR free time in A political group or A sports club, they won't have a time to DO 'something stupid things' (albo 'something stupid' albo stupid things'). In my opinion belonging to
clubs and any groups is very adventageous for young people although
very often they 'didn't' DONT 'knows' KNOW that. But if they 'doing' DO something good only 'besouse' BECAUSE it is fashionable, 'so' (niepotr) DOES this 'is' (niepotr) have aNY sense?