No offence, but if you actually had 50psi in your tyres, and weren’t even close to using all of the travel in your fork, then you’ve set your bike up completely wrong.
First of all, get those tyre pressures down to ~25psi at least, maybe higher if you have tubes in and don’t want pinches, or if you’ve got tubeless you could go a little lower.
Then start by setting the sag on your bike properly, try 30% on the rear shock, and 25% on your fork as a starting point. You want it feel controlled, and ideally to come within a few mm of bottoming out on the biggest hits.
If you get a downhill bike, and set it up in the same way as you have with your current bike, it’ll still feel horrible.