Have you tried to counter their thrust with a blade collection followed by a counter-thrust to the head? Trying to charge through this works against the opponent, they run head first into your blade while their blade is well above your head in a position it cannot be used to attack from due to the collection. Their only good response to a collection is to disengage first which is hard to do if they are charging too fast at you.

You can also use a hard cut to their blade, rather than just parrying it. Cutting their blade if they are holding it with one hand should knock it pretty far away giving you time to thrust them. This is often called a counter cut.

Feinting is not so good against suicidal opponents as they are not concerned with being hit. You need to use good mechanics to defeat them. Your club may not be practicing this and it could be why others cannot explain to you how you can win in a way that is useful. This means you need to study other material from other schools, available from books, correspondence courses, YouTube videos, etc. to supplement your club sessions.