IMO, loosing weight is more of a diet than exercise thing, especially if you're older than 45-50. I lost 170lbs on keto over 16 months, went off it eventually and gained some back during the pandemic. Have to lose about 50. Went back on a few weeks ago. It works for me as carbs have never been good for unless I was doing a lot of working out. When I was young, I could do 6 days a week of weight training around an hour with 35 sets, which is a brisk pace and I wasn't lifting light and I could eat 3k calories a day and lose weight. Due do spine/neck issues, I just hike/walk now and my target caloric intake is around 2k calories a day. Generally speaking, calories in and out, but some may find certain diets work better for them than others. I am not a keto preacher, it worked for me, may not for you. You just need to figure out what you metabolic calories are and calories burned with activity and eat a little less calories. I would say as a general statement, skip simple carbs, beer and sugared pop for sure if you can. Try to eat real food instead of packaged/processed stuff. The other exercise I started doing after Christmas is the heavy bag. One of my daughters wanted it for Christmas. I use it a couple times a week. It's one of the toughest workouts I've done considering I can only do 2-3 rounds at a fairly high intensity. That's less than 10 minutes and I am done. I used to do Aikido, but can't anymore with the back issues. Boxing is a lot more exhausting. BTW, I got my covid shot yesterday. Arm hurts a lot worse today.