you can't just lose weight around your stomach, you have to lose fat overall, you have to do cardio like running, biking, jump rope, burpees
and add in some strength/resistance training like:
pushups
pullups
squats
lunges
dips
chin ups
maybe even invest in some dumbbells or gear for your home
and of course, you need ab training, there's many variations in all of the following:
crunches
situps
leg raises
russian twists
v-sits
planks
and work on your diet...you can do all the working out in the world but if you're not eating properly to get cut, it will never happen...eat lean foods, small meals 5-6x a day, lots of water, watch your carbs, cut out sodas and sweets
follow all that for a few weeks consistently and you'll see results, even without a gym
A.J.
(personal trainer)