What do you think my chances are??

Its for a fintech company in a major city.

Just got a response back after their initial screening (Take home algorithm and a few basic about me questions after sending the application).

Its 3 interviews - HR/Coding + Lead SWE/Coding + Half Day w/ Quant/Tech Teams and the Tech Lead.

My problem is that I haven't had much time to leetcode. Maybe 1 month. I've done about 120 questions spread out over most data structures, but the majority are easy. I've done maybe 20 medium problems. That's it. I'm pretty comfortable working with Arrays, Strings, Linked Lists, Binary Trees, and Graphs, but am trash at Dynamic Programming and haven't even exposed myself to Tries and Heaps.

Am I better off just studying what I know and pray they don't ask me about the things I dont?

I don't like my chances for this one, but I know more interviews are going to be on their way. Just doing this for the experience.

All tips appreciated.

Be honest if you don't know. Say something like "I'm not exactly sure how that works but I think this might be how..." and tell them what you think it is. Sounds like this is an entry level so they don't expect you to know everything. And a good interviewer will find your weaknesses and keep asking questions until you don't know something. It's not a fail if you don't know it. They will be expecting to train you up on how they do things anyway. As long as your take home test is good (where you can Google everything) and you are personable you will be a much better choice then somebody who knew all the answers but looks like they have questionable bathing habits. For an industry full of incels you'd be surprised at how social you actually need to be.