What am i doing wrong?

I mean, this is my second year of snowboarding. I feel like I’m doing great and then I look back at the tapes and it looks horrible. Also, i know i’m standing literally straight up here but I THINK (keyword think) that I bend my knees a lot more when I’m actually carving on a mountain

(I don’t just want park tips, general tips would be more appreciated <3)

(Don’t mind the gear, not buying any good gear til christmas)