have to / got togotta

means = have to
This is normal, informal, everyday speech.
Not used in questions with "Do/Does/Did".
Use "have to" in formal writing and speaking.

NOTE:

He, She and It or a name of a person must use "has", but you only pronounce the "s".

He's gotta practice his English more!

We, You and They: use the "ve" of have or not. Either is ok.

with "have" They've gotta practice their English more.