C++ course + projects to do

I want to focus more on coding (finally).
I know basics of Python and some c and c++ and java.

But because I might want to work in the embedded systems area I want to focus on c++ first (also like the idea of rust and go).

What Projects can you recommend to do beside the tutorials. Thats where I always stop to get better. I have one projects I could do but nothing advanced which would teach me more advanced coding. What did help you guys to become better?

thx slook