@Iwnttogohme The device I mentioned exists for phones as well. ;)
As for the resource packs, the only thing that might be a problem when adding sound effects would be what software you use to put your videos together at the end. As far as I can tell, several (I don't know the proper term...) 'Stop-Motion Artists' use their phones cameras to create their videos. If the one you use gives you a hard time, I'm sure they can recommend better alternatives (which might also be free).
Yatsufusa
Sorry if I sound off-putting, I've run out of friendliness...
I do not think your work is bad, but I suspect these links will help you with your submissions to the Art Portal:
Rotated Art Portal Submissions?
https://www.newgrounds.com/bbs/topic/1540276
SourCherryJack's guide for documenting traditional art:
https://sourcherryjack.newgrounds.com/news/post/1317182
The time you put into your Movie Portal submissions 'does' show, but I think your current work would benefit from subtitles or otherwise added written dialogue (and sound effects). At the time of writing Newgrounds does not support subtitle files, so you would have to 'hardcode' subtitles into the video file.
You can find various royalty free resources here:
https://www.newgrounds.com/wiki/creator-resources
Free SFX packs can also be found on itch.io.
One last thing: I suspect you move the camera/phone you use to shoot the images while pressing the button to take a picture. There is a simple device that can be connected to the camera/phone with a short cable that is essentially a shutter release button (I do not know what it's called), so you don't push the camera/phone. A simple stand might also help.
If you talk about such an investment with your parents beforehand they might at least chip in on the purchase, help you dig through reviews, or accompany to the store to make sure the employee isn't pushing something unreliable on you.
For more specific help from people who do this kind of artistic work themselves, I recommend the NG Animation Forum:
https://www.newgrounds.com/bbs/forum/17
Iwnttogohme
Thanks for trying to help but i have done all my content with my phone but i will check the links out