Someone once told me - "You can't outrun a fork." I admit I laughed when they told me that, but a few months later I had run for 90 minutes on a treadmill training for a 1/2 marathon, and burned something like 1000 calories. Sounds like a lot, until you realize that's less than what's in a Ben & Jerry's container. Even after exercising hard for an hour and a half, I could have had a treat and maintained my weight, but if I had eaten (and drank) everything I had wanted to that day, I would have gained weight. And there's no way I could run 1.5 hours every day! So exercise (no matter how much) really won't cut it for weight loss unless you get serious about diet, as well.
I've had my best success holding myself accountable using the MyFitnessPal app. I'm cheap, so I use the free version, but it's helpful for me to track what I'm eating so I know where I am. My weakness isn't that I eat large meals, it's that I snack all day long. None of those snacks in itself is crazy unhealthy, but in my case they add up to a lot more overall calories than I need. I've also used intermittent fasting with some success, but find I'm much better at intermittent fasting when I'm combining it with MyFitnessPal. Otherwise, I just eat in 8 hours what I would have in 24. Seriously, there have been days when I've burned through my allotted calories in just 2 hours.
Two things that help me with diet are drinking a lot of water / plain tea and eating veggies. They both tend to fill me up and dull my appetite. Doing cardio first thing in the morning before I've eaten anything also tends to blunt my appetite, which is a good thing. Just to be warned, strength training has the opposite effect on me (I tend to eat a lot more after), but everyone is different.
In terms of exercise, I'd clear out a section of your house where you can work out, and I'd prioritize compound bodyweight movements to start (think squats, lunges, pullups, dips, rows, step-ups, pushups, burpees, etc.). If the exercise is too difficult as-is, try the modifications that are out there (i.e. use bands to make pullups easier, etc.) That'll give you a good sense of what exercises you enjoy, and then you can decide what to invest in. The TRX system is a pretty reasonably priced system that with a couple of anchors can help you get a good workout in.
I've put together a pretty good home gym over the years with stuff that was either used or on sale. I have a few sets of Olympic weights, adjustable dumbbells, and a Titan Fitness Power Rack. I'm probably all-in at around $800, but those are mostly pre-pandemic prices, so YMMV.
I don't watch a lot of TV, but having a TV in front of my treadmill has been great. I can catch up on my auto-related shows and YouTube channels while I'm working out on the treadmill, and most days I don't notice that I'm working out.
Hope that helps, and good luck with the journey!