u/parkermod this one's pretty exiting and pure brain joy https://stepik.org/course/104/syllabus
more on stepik (I personnaly also take smth like math stats / probabylity – https://stepik.org/course/76/syllabus https://stepik.org/course/3089/syllabus)
MIPT lectures (not only CS, but a bunch of CS as well)
https://www.youtube.com/channel/UCFvR2L0rclFGWmzS_tlNVWQ
MIPT/Yandex on DS
https://www.coursera.org/learn/mathematics-and-python
bunch of MIPT on coursera
https://www.coursera.org/search?query=moscow%20institute%20of%20physics%20and%20technology