Of course the OP needs a new fork, that bridge was crossed long ago. But the discussion is still relevant because the OP want's to prevent a repeat of the problem, even if he didn't say so directly.

To that end, understanding why and how his fork failed is important. I'm suggesting a torque arm as an absolute necessity regardless of the type of fork. Others suggest he needs a stronger fork or thru axle and they may be right, but I disagree on that score.

IMO the OP can buy the fork of his choice and be fine as long as he uses a torque arm, or torque key on the axle (if they make them for this application, but that would need a beefier dropout) or he can buy the strongest fork in the world, and still have problems if he doesn't use a torque arm or key of some kind.