You'll need to lift weights, and lift heavy. Usually choosing a weight that you can do around 10 reps max before failure. Do 3-5 sets of those 10 reps.
Theres machines at my gym but I prefer to do free weights. I have an app on my phone called fitness buddy that shows me a ton of exercises using almost any piece of equipment and how to do them. Cardio is good for fat loss, but won't really do jack to build lean muscle. Make sure your protein intake is good too 100+ grams is usually pretty good.
I;ve been lifting with barely any cardio and I can tell you i'm stronger then I've ever been in my life. My diet is not on point, I pretty much eat wtf I want and thats probably why I'm not losing steadily but I'm working on that. Personally my schedule is arms one day, legs, rest, chest, back, rest. On rest days I might go do 20 mins of cardio (stairmaster for my butt)
But lifting has gotten rid of the bingo wings and now I have visible bis and tris so hollerrr
I started leg presses at like 140lbs or something like that and now I can do 400lbs. Fitness goals also keeps you more sane.
I suggest NOT using the scale. You retain water a lot more when you lift and the numbers will give you brain trauma. I use tape measure to track my losses.