Do you understand that hydrogen bombs work on a completely different process, than any controlled use that we've yet been able to make of burning hydrogen as a fuel? Combustion is a purely chemical process. A hydrogen bomb is based on fusion, a nuclear process. Actually, a standard hydrogen bomb has three stages—fission, fusion, and another fission. Hydrogen is the fuel for the fusion stage.
It takes some very extreme conditions of heat and pressure to get fusion to take place. It's the process that powers our Sun.
For decades, scientists have been trying to get a net-positive form of controlled, contained fusion to take place. So far, this hasn't yet been achieved. It's theoretically possible, but we haven't yet been able to get more power out of a controlled fusion reaction than we have to put into creating and sustaining the conditions that it takes to make fusion happen. If we ever get to the point where we can get more energy out of a controlled, contained fusion reaction, than we have to put into making it possible for it to happen, and if we can generate usable power from that, it will change everything. Hydrogen would be the fuel for that, and we would be able to get much more power out of it than it would take to obtain the hydrogen to fuel it.
But is hasn't happened yet. Almost all my life, I've been hearing that we were probably within a few year of achieving this, but that's been for half a dozen decades, now, and we're still not there.
As it now stands, the only fusion reactions that we have been able to produce, where more energy comes out than what we had to put into it, end up looking something like this: