I am planning to re-apply to some very selected universities in 2021 for 2022-2023.

I had applied to both schools in 2019, that I want to apply to this year as well. I got waitlisted at one (SLS), and rejected at the other (HLS).

Can anyone please guide me on:
- How to go about my re-application?
- Does it make sense to re-apply or will there be a massive prejudice to my candidature and hence, has not much point?