I’ve got Covid and feeling a bit rubbish so I haven’t gone to work and he’s been too much constant questions of “why are you being off with me” “ what have I done” nothing I’m just poorly right now will you leave me be please but no of course he can’t!
He is being dishonest. He can leave you alone, if he wanted to, but he doesn't want to. If he was honest he would say "how dare you be unwell when I want you right here looking after me." And "how dare you go out by yourself when I want you right here with me."
Green fingers I’ve already lost years of my life like this, trying to be happy with him.
You can't get those years back, so are you going to lose even more years trying to be happy with a man who doesn't make you happy? Or are you going to find a way to enjoy the years you have left?
it is so hard to keep telling someone who loves you that you don’t love them
So don't tell him that. Tell him what you want. "I want to go out with my friends and I don't want you to interrupt me while I'm out." "I want peace and quiet when I am ill". If he loved you he would give you those things, so if he says he loves you and he doesn't do those things then you know he's not being honest. Whether you love him or not isn't really the point any more. So you never have to say you don't love him, but finally when (or if) you make you your mind up to go you can just say "I want to leave".
He will now badger badger badger me until I say yes I will give you another go.
He badgers because you give in. You don't have to give in, you just have to make your mind up what you want and stick to it.
I have nowhere to go here even if I didn’t have Covid. Can’t afford to rent somewhere here, no family around here or close enough friends to turn up on their doorstep with kids. My family live 4 hours away, what do I do about school for the children?
So you are mostly with him for practical reasons? Once you decide that he is not your future, you will start to figure out solutions.