How do I learn to understand DS&A?

If you have been self studying DSA and that’s your main gap, I would absolutely not look at a bootcamp, and instead look at more interview prep. I’m the founder of Formation.dev and an 8 year E7 engineer at Facebook and have helped many bootcamp grads with some work experience level up to top tier jobs. While we support you all the way until you get a new job, and it’s intense,it’s also not cheap so I would carefully look at your options and figure out what’s best for you. Leetcode is a great way to get some kind of benchmark. For example, you want to be comfortable solving medium level problems to have a chance at top tier roles.