Dr. Hamkins is an excellent communicator of math. I highly recommend his substack and mathoverflow:

https://substack.com/@joeldavidhamkins

https://mathoverflow.net/users/1946/joel-david-hamkins

Prof. Hamkins also has a lovely (and very accessible) book that accompanies this series of lectures. Plus the physical version is nicely printed and bound (unlike some textbooks).

https://mitpress.mit.edu/9780262542234/lectures-on-the-philo...