I'm talking 25+ foot jumps where crashing becomes a bit more serious.
If your talking about a 25' double then it's probably down to technique. Then again, I'd like to think that most people wouldn't attempt a jump of that size unless they were pretty confident they could make it.
If it's a just a kicker and you're gaining that sort of distance using speed, it could be something else that's causing you to come in front wheel hot. Something as simple as slowing down your rear rebound could help (i'm assuming your using a full-sus). Also some jumps have an optimum speed at which they can be hit. Go too fast and (due to the shape/length of the transition) it's impossible not to be pitched forward.
As has been said, the basics of jumping are fairly straightforward. But more advanced techniques take time to learn. The faster you hit a jump, the less time you have on the transition, making it harder to dial in how much 'pump' is needed. It's all too easy to be thrown out of a kicker mid-pump simply by going to fast. The opposite can also happen. Over pumping a transition can also have similar results. Once you have mastered the 'art of pump' you can hit bigger gaps with much less speed and far more control.
Apologies if i'm teaching you suck eggs here, but it's nigh on impossible to cure you 😆 without seeing you ride said jump.
p.s. if any of the above was helpful, please send your cheque to Jedi. I'd hate to think he was losing out on a potential client. 😉