Best retirement plan for someone in their mid 20s?

Hey everyone, I’m sure this might get asked all the time, but I am curious to know what sort of retirement plans you all would recommend for someone who is in their 20s.

For background information, I am a 25-year-old male that works at a job where there are no retirement benefits, so no sort of retirement Plan or matching. With that being said, I know that there are a handful of options for starting a retirement fund on your own, and I’m not super savvy in that field, so I’m not sure what the best options would be. What would be your advice for me as far as what plans would be good for me to set up? Thank you in advance!