What everyone else has said - the problem isn't the football, it's the set-up you've fallen/been pushed into. And it sounds as though you feel your life is essentially about facilitating theirs. Which is rubbish.
The only person who is realistically going to be a catalyst for change in this set-up is you. It's working for them. To change it (and how easy it is to give advice on the internet!), you need to consciously step back from some of the grunt work. Plenty of people have to get themselves a simple meal when they come home tired from sport. They can too. If you want to carve out some time for your own training, think about how you can make it happen and then do it. If that means DH or DSS have to pick up a bit of slack somewhere along the line, or make their own lunch, that's OK.
I get where you are. I really do. I have three active teenagers and our week looks like this:
Mon: DD1 to work, DS1 to football 40 mins away, DD2 to judo
Tues: DH to football, DD1 to work, all kids afterschool sports clubs
Weds: DD1 to netball, DS1 to football training, DD2 to guides
Thurs: all kids afterschool sports matches, DD2 to dance
Fri: DS/DH to cricket
Sat: DS to football training, DD1 to netball matches
Sun: DS football matches (DH is ref).
As you can see, everyone else has fixed commitments and I have none. I'm working on that - I'd love to do a regular exercise class. As it is though, I absolutely prioritise my own exercise 5 times a week, and a quiet time where I read for half an hour 2 days a week. DH has always been ruthless about carving out his own exercise slot - he runs every day and finds his mental health worsens if he doesn't. But when I decided that I would do the same he was totally supportive of it - it just needed me to assert myself about it. I hope the same might be true for you.