How to make a GUI app?

Question

is There any Websites that offers projects or Problems where we can practice making a GUI app and then we can see the solution and compare ??? sorry for the Bad english. in General i want to ask how can i practice making a GUI app i want defenitely to make an app. Desktop or android

Answer 1

https://youtu.be/3YLYMtBmqEI

https://opensource.com/resources/JUMP_LINK__&&__python__&&__JUMP_LINK/gui-frameworks

Answer 2

thanks but thats Not what i need. i dont know matlab so i need c# or similar