in your opinion, what's the best investing application/platform?

so i decided it might be time to get to investing, but i never have invested a single dollar in my life. ionly have been looking into the cashapp stock feature, i feel like there has to be a different platform or application that i can use to invest in stocks and/or crypto currency.

what do you guys think is the best investing application/platform, and why is it a good one? thanks in advance