1. Getting into a more prestigious company is likely your next step. You only need to stay there 2-4 years but, since colleges are more corrupt, it's really the modern grad degree that proves your worth. FAANG or a reputable startup is your best option (LinkedIn Top 50 or Breakout List). The crazy hours you hear about are more self-imposed than you think, not mandatory.
2. If FAANG isn't calling you back, this means that you likely weren't even close on the interviews (Medium to Strong - No Hire). The interview algorithms are a heavily game-ified system and these companies expect you to study and game them so hard that answering the questions are second nature. I used to resent this, then I realized that it's actually a really good way to filter a large group of people with less class bias. If anyone can pass but they have to create their own 2-4 month gradual study plan to ace it, who is competent enough to pull that off? Often, in a larger org, you are encouraged to ignore your instincts and game-ify on arbitrary metrics to achieve larger-multistage company goals anyways. Adjusting my mindset this way helped me get the fortitude I needed to be better here.
3. Coding Competitions are another good way to get noticed by companies. The existing algo interviews started as NP-complete puzzles and Coding competitions and many people came to Facebook from that route (https://github.com/robertdimarco/puzzles/tree/master/faceboo...). Kaggle is the new equivalent for ML. It's a great time to get into ML via a non-traditional route and will likely turn into the existing algo interview frustration as it matures.