Interactive Brokers is a long-standing platform for trading focused on advanced day trading options. While not ideal for investors focused on long-term retirement investing, IB has industry-leading tools and software for options, futures, and other financial instruments.
If you’re planning to invest long-term for retirement then IB is overkill for your needs, but if you’re aiming to learn how to day trade, they offer courses and content to help learn the ropes.