Accidentally marked all my emails as junk - Nuclear bomb to emails!

I accidentally marked all my emails as junk for the second time in 2 years! I-phone buttons for "Mark as Read " and "Mark as Junk" are too close together, and there is no safety net. Apple -please fix this!!

Marking as Junk permanently destroys your emails. I was able to mark most junk emails as Not Junk - and move most back to inbox, but now my emails are filtered out by COMCAST (ISP) so new emails from trusted senders never get to me. All the moved emails no longer show up in email searches (maybe metadata is lost?). I had to change my email and use a new ISP (Google) to get emails from same senders.

The last time I did this, I tried multiple times to mark all as not junk, on my iphone, which only does a couple hundred at a time, so I tried more than10 times. I later learned this created more than ten mostly complete copies of all emails saved from multiple years, which then overloaded the Xfinity file size limit, resulting in a lock up and permanent loss of ALL emails. I had to reset my account , delete everything and start over. I lost a lot of valuable data.

Is there any way to correct the filtering of emails from the ISP so good emails are not treated as spam? I don't see any options or safe sender lists in Xfinity / Comcast settings to address this. I called Xfinity customer support, but they were clueless how to reverse the impact of this Apple iphone created problem.

How do we get Apple to fix this problem to prevent it re-occurring? Maybe add a message: "Do you really want to move everything in your mailbox to Junk and never be able to talk to those senders again? If so, tap here...".

I just got a new iPhone but will switch to Android in next cycle if not addressed.