There are plenty of good options out there! Many use Cloudflare, though they are another giant. I’ve been happy with dsec and freedns, and would recommend both.

Ive used freedns for over a decade; it’s simple and straightforward. Their free tier is plentiful, and their subscription costs are reasonable.

I recently moved my self-hosted services to dsec so I could better automate SSL certs. It’s been nice and easy too!

https://youtu.be/U4uH1yHOqaU?si=SzEbQnEHcERKgJzr

It’s honestly funny because I learned the concepts in the math classes a lot better as a result of this - it took a very thorough understanding of how to use a concept to write a program to solve it for you.

My experience almost exactly. I built the interest by making/hacking TI-83 games, then made math class programs which i never really used because i had learned the material. It was fun, eye opening, and paved a path to my career!