You'll probably mostly hear to not buy a too expensive tablet, and it's a good advice for many people.
But because I struggled a lot with tablets, I'll give you also my point of view.
I bought a very cheap tablet, before screen tablet even existed (or at least before they were easily available, I'm not sure). It was terrible. I thought digital drawing was not for me.
Then, because I needed it for my job (not art-related drawings) I decided to try again with a better one years later. I struggled for months, trying everyday. It almost disgusted me of drawing, even traditionally.
Last year I bought a relatively unexpensive screen tablet (still way more expensive than these without screen though), and FINALLY could draw digitally.
For a good while I was really furious against everyone who persistently advised me against buying a screen tablet. Now I realized they only meant good, but I thought I would share my experience, not so much to tell you that you need a screen tablet, but rather to tell you that if that does not work for you, there is still hope!