Trumps plan, if I read it correctly (and I may be wrong), is to grow the economy to offset spending and the debt. He's also attacking the deficit with tariffs. we're at the point where we can't cut our way out of this problem. Trump is trying to bring industry and investment back to the US and I agree with the strategy.
I also agree that economic growth and more domestic productivity will help reduce the deficit, but I do not think it will be enough to solve the deficit problem. I think we have let things get too far and it will take a long term solution which Trump cannot solve in 4 years. The belief that the debt can be controlled without a little economic pain IMO is folly. We need to cut spending and it doesn't have to be that traumatic.
For example, we have 72 million people currently on Medicaid. It is hard for me to believe that 25% of this country is too poor to afford medical insurance, or too disabled to go to work and pay for it. Getting illegals off Medicaid is a start but it is a mole hill rather than a mountain.
I would bet If we looked a every government handout we would find similar problems. The problem is, once you start handing out free stuff to people, they will fight you if you try to cut them off. But we subsidize housing, medical insurance, food, student loans, and lots of other stuff and we expended all of it over time because it sounded good during a campaign.