If you want to do “aerobics”, try warming up for a bit,then running as fast as you can for 1 minute, walk and rest for a time (maybe 1:30) to start, repeat high intensity then low intensity. Start for maybe 3-4 high intensity sessions and build up to maybe 15 minutes. Once you get to 15 minutes, you can reduce the rest time. This is what I do, only on a treadmill (plan to go outside in the cold, with minimal clothing, but haven’t been able to make that happen yet).
For “weights”, you can do pushups on a flat surface. You can do pushups with your feet on the ground and your hands on a stable platform such as a table, chair couch (it CANNOT move when you’re doing pushups). You can do pushups with your feet on a chair and your hands on the ground. Do them until you can’t do any more. For instance, if you can do 5 pushups, do those, take a very (say 10 second) short rest, do more, take a short rest, do more, until you can’t do any more.
You can do planks (you hold your body stiff while on your hands, arms extended), all kinds of exercises with no weights, only body weight.
There are studies indicating that weight lifting is better than aerobics for insulin sensitivity. HIIT (high intensity interval training, as I describe one version above) is good too.
You don’t have to “run” for HIIT. Jimmy Moore uses a tractor tire and flips it for one minute.