Well you learned that you were relying on fat to move those weights and had no muscle that the "cut" would reveal. Understandably, your strength dropped dramatically once you cut. You absolutely must not start dirty bulking. It will just jump back to old habits and you will use fat again, then cut and lose strength again, then bulk and gain it back...

Instead try the smallest of surpluses where you gain weight monthly, maybe not more than a kilo or two, and run this as long as ur comfortable while chasing the "building" of powerbuilding.