Which baseball bat would you recommend me? (sports, self-defense)

Hallo,

So since a bad incident I am considering whether to start self defense or martial arts to boost my confidence, do you have any self defense or martial arts experience?

And what would be better in this case, martial arts or rather a self-defense course?

And if so, do you have any martial arts that you would recommend?

It’s just to get more self-confidence into my life again.