Several people have recommended walking, I’ll add another vote for that. When the COVID lockdown started I bought an elliptical and turned one room into a small gym. That was okay but hard to stay motivated. Then I just started walking outside, first just a couple of blocks and now 2-1/2 years later am doing 7-10 miles every morning and have lost more than 60 pounds and about 12% body fat. Get good shoes, go to a runner’s shop where they know a lot about feet and let them fit you, I’ve found these folks tend to be very helpful and encouraging.

Also recommend getting an app or joining a group to help with motivation. I got the Pacer app which tracks your routes, mileage, etc. and you can join groups and sign up for challenges. Other users tend to be positive and encouraging and some days they are the only thing that gets me out the door.

Good luck!