Hmm is this my skates or do i have weird feet? haha?

i have ridell 121RS skates. im like basic 8/freestyle one. im working on my scratch spin waltz jumps that stuff. and i feel like my ankle is really wobbly in the sktes. when i spin i cant seem to get off my inside edge. on a recent question the best answerer told me i had weak ankles, i would i agree but i'd also like to know whats up with my skates, i tie them reeaallly tight- so tight that the laces make impressions on the tongue but they still feel a little big, but the skate in the foot is perfect size. am i doing something wrong or is it possible that this is a sign i need more support? thanks[;