I need to join the gym.
well, heard you say, you wanna lose weight.
to lose weight, then workout is right choice.
if you wanna build body or physical strength, then #gym session with weight lifting is right.
also, since you are restarting after a long time, it is better you start with skipping (indoor) to bring back you stamina.
@noorul That's a very common misconception.
You lose fat by burning more calories than you take in.
Exercising is just a method of increasing the amount of calories you burn.
While it's true that with a cardio based workout, you would burn more during the workout compared to a resistance program, in the long term a weight lifting program will burn more as you will continue to burn more calories throughout the day
See:
https://www.medicalnewstoday.com/articles/323922
https://www.bodybuilding.com/content/fat-loss-training-wars.html
Many people wonder what the best type of exercise is for burning calories. Cardiovascular exercises and weight training have different effects on the body and may influence weight loss or muscle gain. Here, learn more about how each type of exercise burns calories and which is best.