Grammar and Semantics

Hello,
I am not sure whether the three sentence makes sense in term of grammar and semantics.
Can you give me a hand with checking them
Thank you for your help.


1. Because knowing a company like basketball team, I need to cooperate fully with my colleagues, assisting our company in making a profit

2. What helps our team to attain these goals is cooperation I gain from basketball game

3. I can not help game playing is a good means which to bestow some important concepts to us.

4. I can not help game playing is a good means by which i can gain some important concepts.

Sentence 3 and 4, which one is right.