Java or Python for leetcoding? Need help

During my college I used java for dsa and in the initial year and half I worked with java (stopped leetcode after I got a job, which is almost 3 years, bad decision). Later I had to work on python for another year and I almost forgot the syntax and stuff on java. Stuff happened and some java guys left and they had me to work on the java side again. So after a few months, here I am, wanting to pick up leetcode and grind for better companies.

I am writing this now cuz i realised that I'm out of touch in case of java cuz recently I have only fixed a couple of bugs nothing more and since it's been a while I haven't used python as well.

Note: I was using python for backend, non ml work and I have no knowledge on the ML side so I would stay away from it.

So should I

1. brush up my java and work on dsa using java
2. brush up java but use python for dsa
3. Forget about java, focus on python (but is non ML, only backend Python used these days?)

Please help, TIA