this isn't bad, but it aint that good. :P

This is kinda cute. Not good, obviously, but it's adorable and you put in the added effort to speak in English, even though most here are just as fine with reading subtitles. Thank you for that, and welcome to Newgrounds, LBC.

Not bad, I think the introduction is all good and such, and I'm sure your ideas for animations will come out well! What I would say you should improve on is mostly visual delivery, just paying attention to fine details. For example, the part with the "weird things" bucket, as the character falls in they are not filled in with color (even white would work) so the line for the bucket can be seen through the character as if the character was transparent, which is a little strange. I also think some more work put into the backgrounds could go a long way! You could keep it mostly black and white if you want, but just doodling some little scenery behind your character would just make the whole animation more visually appealing.
As far as your audio goes, I think you should make sure to apply some mastering to the audio track to ensure you don't have any clipping if at any point you choose to get loud (which is something you did here). You would want to use a limiter for that and ensure that the audio never crosses over the 0 dB threshold. An EQ would also make sure that the audio sounds full the whole way through.
Overall, good work, and I hope to see more of your work in the future! Good luck :)