Hair help!

MEW • Married since 2013 w/ 5 year old 💙

I have naturally black curly hair, seven plus years ago I began to straighten it (2x a week) and now have carmel blondish hair, a bit below my shoulders.

I feel my curly hair is way too short and looks horrible on me now:(

My straight hair is so boring and doesn't grow!!!! I think it grows in thickness and not length.

What can I do to make my hair grow???