Student or Learner
"He met with an accident" or "He was involved in an accident" both mean same right?.
"Invading armies have no rights." Noam Chomsky
I would say that if he met with an accident, he was injured or struck or whatever.
If he was involved in an accident, he could have caused it but not actually been injured or affected otherwise.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.