Trying to gain weight

There are more people here trying to lose weight than trying to gain it, but you're not alone in having a "gain weight" goal.

This part of the MFP Community is where people discuss that the most:

https://community.myfitnesspal.com/en/categories/goal-gaining-weight

It's not the most active topic area here, but there are lots of threads about that topic there, and some good ones in the "Most Helpful Posts" subsection.

Wishing you success!