Why is my email labeled and sent to a folder in Gmail instead of the inbox? [closed]

Question

I have a custom label in Gmail that sends mail I want to look at about once a month to a folder labeled "JUNK". The filter tells the emails to skip the inbox, mark the emails as read, and label them as "JUNK".

I've noticed that a few months ago, my emails from Scotiabank regarding interac email transfers were being labeled as Junk. Undesirable behaviour! I looked in my filter settings, but nothing there indicates why this mail is being sent there. As far as I can see, none of my filters should result in messages with Scotiabank's information being sent to "JUNK".

Is there a way to determine why a specific email is being sent to a folder through a label filter? When I try to remove the label "JUNK" from the email, it still won't show up in my inbox.

If there isn't a way to do this, how can I force these emails to go to the inbox?

I looked at this post (Force email to stay in inbox), but I think it assumes I actually know why my mail is being filtered to "JUNK" in the first place.

This is the first time I've posted here, so please let me know if I can add any information to my post.