Finally, I can now move my character. Jumping still has some problems which I will cover it on my next questions. I asked this question on Stack Overlflow and I was able to fix my problem with the help of a friend. Since the answer is long and it continues with more than 10 comments, I decided to put the link to my question here.

https://stackoverflow.com/questions/64019057/i-have-some-serious-problems-with-new-input-system/64066014?noredirect=1#comment113359107_64066014

Finally, I can now move my character. Jumping still has some problems which I will cover it on my next questions. I asked this question on Stack Overflow and I was able to fix my problem with the help of a friend. Since the answer is long and it continues with more than 10 comments, I decided to put the link to my question here.

https://stackoverflow.com/questions/64019057/i-have-some-serious-problems-with-new-input-system/64066014?noredirect=1#comment113359107_64066014