You should discuss exercising with your Dr. first. If you are on medication for anything your Dr. can give you guidance on how to approach this.

My opinion is that at your age, you should get back to normal weight before a rigorous exercise routine. Diet first.

Unfortunately the best thing for you is something that is not available now because of Covid, which is group fitness. Cardio, weights, body control, boxing, spin in a group format to keep you motivated.

Lose weight and then start a variety of exercises. Weights for a person your age is probably where I would start then fold in cardio once your weight drops.