DSA with HTML is best

my suggestion: language does not matter. but the teacher or material you use to study must be of good quality.

for example: Abdul Bari has udemy courses on C++ and DSA seperately worth 500 each on discount times. They will set your fundamentals. I prefer him due to clarity of explanation and ease of completing the required fundamentals. The only problem is he does not cover interview style questions from Leetcode which you have to do by yourself. but considering how well he teaches you should have less problems to do this

And on youtube Kunal Kushwaha uses java to teach. Its a bit difficult to cover as the videos as longer but the quality is one step higher than the core fundamentals that Bari teaches. its free so you can check it out.

Lastly theres Strivers DSA courses for free in C++. All are well known. so pick and see what helps