right meaning?

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. You’d better go to the doctor about your cough.
    1a. = You had better go to the doctor about your cough.
    1b. = You would better go to the doctor about your cough.
    Which one is right meaning for #1?
  2. You’d better you not stay here.
    2a. = You had better you not stay here.
    2b. = You would better you not stay here.
    Which one is right meaning for #2?
2

‘You would better go…’ /‘you would better not…’ is incorrect in any setting.

3

Beeesneeees,
1a. You had better go to the doctor about your cough.
2.a You had better you not stay here.
These are only correct? Am I right?

4

2a is incorrect. The second ‘you’ should be removed.