How do use "does" and "do" in a sentence?

‘Do’ and’ Does’ both are used as helping verbs in present simple tense of English Language.
The difference between ‘do’ and ‘does’ is very basic.
‘Do’ is a verb and ‘does’ is its third person singular present tense.
Thus, when the subject is represented by the pronouns ‘I’, ‘you’, ‘we’, or ‘they’, we must use ‘do’.
- I do not know the way.
- Do you know the way?
- We do not know the way.
- Do you they know the way?
On the other hand, when the subject is represented by the pronouns ‘he’, ‘she’ or ‘it’, we must use ‘does’.
- He does not know the way.
- She does not know the way.
- It does not look like the right way.
Apart from it, it is used as a main verb also where it needs to express any working condition of I or plurals
e.g ‘I do yoga daily.’ In the same way , Does is also used as main verb when we need to talk about any working condition of third person e.g ‘He does yoga daily’.