Stop going for mind-numbing one-job gimmicks and self-flagellating 90mins sweat on the spot sessions on an exercise bike. No wonder you hate it, because it's mentally soul destroying and has little physical benefit. I'd take my worst marathon training run over that because at least the scenery changed and I'd achieved something at the end of it!
Download a good audio book or playlist, and go for a brisk walk (or C25k if you have more fitness) to deal with the cardio and get doing some resistance/ strength exercise to build up some muscle whether that's at home or the gym.
Create a plan and tick off the sessions done.
Set some goals and tick them off.
A personal trainer would be optimal, but there's a lot of articles and advice out there. If you put decent parameters into an AI of your current ability, what is viable, and goals you can create a simple training plan, but cross check it against other sources.
Everyone needs exercise to keep them mobile in later life. Weight bearing and resistance exercise builds muscle which increases your metabolic rate even when resting (whoop, more calories avaliable to eat!) and it helps to reduce the risks of health issues like osteoporosis as well as managing blood sugars and blood pressure.
The density of muscle means that while I'm technically "overweight" my shape is good, and a lot of that is metabolically healthy muscle in my arms and legs. Yes there's flabby post-baby stretched skin that's going nowhere by natural means and was still there when I was 1½ stones lighter at a BMI of 22, but I'm stronger now than I was 10 years ago and have just had a weekend camping where it's been a heck of a lot easier to do things like lifting full water containers than it was after I'd lost muscle in difficult pregnancies.
Change approach, do things that are more efficient and interesting rather than treating movement like a self punishment for not being one of the 1% of people who looks like a model.
BMI has its uses, but it isn't a full picture about body composition and health, and it's worth compromising weight/ BMI to have better muscle density.