When I started out 4 years ago I started with Robinhood. It’s really easy to use and as someone who knew very little about investing it helped me get the basics.
With that being said I use Fidelity now because I don’t trust Robinhood to act in my best interest. Using Fidelity has “forced” me to become a more informed investor because it doesn’t cater to my lack of knowledge. Personally I wish I had made that decision in the beginning because my investment decisions have become more serious and informed.
I think most platforms are trying to become more beginner friendly so there probably is no right and wrong answer and maybe some more experienced investors will have more information. This is just my experience.
Hope this helps!