So he’s completely selfish.
He actively tries to make the DC not want to spend time with him.
He is obsessed with - has an all consuming gambling addiction & gym addiction ??
Did he have these obsessions before the kids?
Conducts his social life, gym & work with no consideration for you/ the kids
He is a King. It reads like a 1950’s marriage.
He sounds so entrenched in himself & manipulative with it.
Im sorry OP - hard to know what to suggest.
You say he does show the DC love but (aside from all of the love from you & their grandparents) as they get older, they will start to notice he doesn’t want to spend time with them - or that gambling etc is more important than them etc.
That is quite damaging IMO - but no parent is perfect obviously.
What I find quite concerning is how entitled he feels to be able to ignore them & fob them off. To be able to say I never wanted them when his own flesh & blood are there wanting his attention??
It makes him sound like he doesn’t have much empathy or concern for anyone but himself.
Sorry OP.