Windows -> Linux, what (dis)advantages, what do I need to be aware of?

I'm not sure if I want to switch to Linux but I am considering it.

I'm deep into Windows, but I want to know what the advantages and disadvantages for me would be if I'd switch to Linux.

I've worked with Linux two times a bit and I think the biggest advantage is that I can customize it so much.

I'm also starting a job training ("Ausbildung") as a Coder soon so I think this may be a good way.

Just give me your thoughts please. Thanks!

https://redd.it/1uyswm5
@r_linux