Why my submissions aren't publicly visible
I read the guidelines but didn't find out why this is happening.
You probably triggered some anti-spam mechanism, since most brand new accounts submitting youtube videos are just trying to promote something
You seem to be upvote-farming.
The rational reason for this is to level-up a bunch of accounts so you can form voting-rings and steer discussions by abusing flag and vouch buttons.
Welp, that's not very nice.
Ask the moderators, hn@ycombinator.com
Good luck.
videos aren't mine, I just found them important and informative, I understand my submissions may not be visible at the top because not getting enough points. but submissions aren't visible even with my username.