What practical tasks to dilute the theory obtained while reading the book?

Question

C++ / C#

I plan to start studying Sharp with the kind help of Schildt and his book on this language. I read reviews and write that there are very few examples, but there are no tasks at all. That is theory, theory, theory. Naturally, the theory needs to be consolidated in practice by solving various kinds of problems based on the material covered.
Here, in fact, the question is - where to get such tasks? (No, I know about the existence of Google, I just would like to clarify if there is a collection of tasks just for Schildt's book with an increasing level of complexity just for the material of the chapter passed. Well, or something like that)

Answer 1

https://eax.me/programming-language-learning/

Answer 2

https://leetcode.com