The key to enjoying exercise is to find an exercise you love. I used to find the idea of exercise boring, but by chance I discovered I love skating very, very much and for a year or so, I went skating multiple times a week, which in itself is a form of exercise. But the more I enjoyed skating, the more I wanted to exercise, as in I stopped skating as exercise and started exercising to enjoy skating more. I wanted stronger legs, stronger core, stronger arms, etc. So I started weightlifting, I started adult gymnastics, I started swimming, aerial, trampolining, dance, etc. And because I already had a decent baseline of fitness from skating, I immediately enjoyed those more.
That said, when I was too busy to be able to do the exercises I love, I took up jogging on a treadmill at home, which I have a real love hate relationship with. I mostly hate it while I do it, it sucks. But then I finish my challenge, 5k without stopping, I take a cold shower and honestly, the endorphins that hit me are like the best quality mdma times 1000. I'm just insanely blissed out in a way that is unimaginable until you've experienced it, every part of my body and brain are just happy. I have to be careful to not do it before I try to work, as I'm just too chilled to do anything that requires brain engagement. It's kind of crazy, as it only works with running and it's because I don't enjoy it past the first couple of minutes, I'm inconstant negotiation with myself to finish because my every instinct is to stop. I get a pleasant feeling of satisfaction and chill from every other workout, but running makes me out and out high.