I am still nearly 20s but I forget things easily and frequently. Is there something wrong with me or it is considered as normal?
No its common to everyone
Bro there are few possibilities
1.) You lack concentration
2.) You are forcing youself to learn something which you don’t even worth considering learning.
3.) You had a family history of dementia or Alzheimer’s (though it effects only old people)
4.) You lacking proper diet and exercise