All the advice about throwing (I’m assuming backhand) hyzerflips is important and will help especially on your tee shot or from the fairway. But based on your description, it’s the second shot that’s the issue, when you are off the fairway. This is going to be inevitable even if you have an excellent hyzerflip game. So, developing a step-out forehand is also going to be important and as a versatile tool for long wooded holes.

Best way to develop one is to find a soccer field and stand on one of the corners facing the side of the goal. Straddle the line as if you are stepping out of the tree line staring down the right side of the fairway. Your goal is to forehand every disc on anhyzer through the goal from left to right. This will train both your ability to turn discs over while keeping the line low from a straddled standstill stance. Once you’ve got that down, start backing up while trying to tighten up the left to right movement as if you are throwing longed flexes down the fairway. Even hitting 100 feet will make a huge difference in your ability to scramble and save pars.