i need a c# 2d movment script i have been trying to make my own but it didnt work pls help

i need help with movment in my new game idk why but my scripts arent working i dont want animations i just want basic movment like moving left or right and jumping

I have one here:

https://www.youtube.com/watch?v=1Xs5ncBgf1M

Full source here:

proximity_buttons is presently hosted at these locations:

https://bitbucket.org/kurtdekker/proximity_buttons

https://github.com/kurtdekker/proximity_buttons

https://gitlab.com/kurtdekker/proximity_buttons

https://sourceforge.net/projects/proximity-buttons/