it isn’t my, his, etc. thing
idiomPart ofthing
it isn’t my, his, etc. thing — idiom
1. Used to say that you do not really enjoy or are not interested in something.
1.idiom
Definition
Used to say that you do not really enjoy or are not interested in something.
Example
I tried yoga, but it just isn't my thing.
Cooking isn't his thing; he prefers eating out.