I feel a bit like a broken record on this, but it baffles me when people post some variation of:
"I failed X......can I still do Y residency/career/etc?"
What they SHOULD be posting is a variation of:
"I failed X...can you help me figure out why I failed at X so I don't make the same mistake again?"
OP, I know it sucks and you feel bad and I promise you I'm not trying to make you feel worse, but your first priority needs to be a complete re-evaluation of your study habits and time management going forward. M1 is one of the easiest parts of med school academically speaking and it will only get tougher going forward.
People who were qualified enough to be admitted to medical school only fail for a handful of really big reasons. Why else do you think it's such a red flag on an application even after you eventually pass? People will wonder: substance abuse? mental illness? burnout? immaturity? unhealthy relationships? illness? family instability? etc. Mostly, it's the first 2 of those that people are really wondering about, especially in someone who otherwise goes on to do very well. That may not be the case here and obviously those are very personal and very serious issues, but I would encourage you to seek help if there's even the slightest chance something like that could be going on.
You need to do some serious self-searching and have some private conversations with people you trust so you can fix whatever happened. There is also no guarantee you'll pass the remediation without changing your approach and then you'll be stuck repeating all of 1st year. Definitely take advantage of any and all tutoring or faculty-led reviews or whatever else is available going forward.
Long term, if this is an isolated thing and you address the underlying issues, you'll probably do just fine. You'll have no trouble matching radiology somewhere. I think the reason for the decline in stats has more to do with the proliferation of programs. You'll have to address the failure in your application and interviews, but if it ends up being isolated and your steps and clinicals are good, you'll probably do just fine in the match.