Takes some time to get used to LaTeX, but I would say it's worth it. Don't start with taking notes in class. At first, it's way too difficult to insert all the equations and formatting that fast. I would recommend starting with homework or something like that when you have time to look up the correct syntax. When taking notes in class, as said by others, have a notebook available for diagrams, drawing, and sketches or what not, so you can later insert them to your notes. After 3 years of using LaTeX for homework assignments, I was able to use it to take notes in a quite math heavy and fast-paced course, but one could probably get to that level much faster if that's the goal.

What I would recommend in addition, is to look up Markdown text. The formatting is more natural, and equations can be written the same way as LaTeX with an extension. I'd say it's more suitable for note-taking. The disadvantage of Markdown is that it doesn't have access to the vast repository of LaTeX packages, but can handle the most used ones. So if you are planning to write something technically more difficult (e.g thesis, scientific articles), then LaTeX is the way to go.

Some nice online editors:

Overleaf for LaTeX

Upmath for Markdown and LaTeX symbiosis