What you posted is the sprite sheet, I had to do the animated version myself to see it moving. Post animated gif of your animations if you want feedbacks.
So, here is what it looks like:
To begin with, look for references, search for "walk cycles" and you'll get plenty of stuff to draw inspiration from. Like this for example:
We can't do it for you, from what I see you have to start studying animation principles, there is a lot of videos covering the subject on youtube. And maybe drawing, too, pixel art is not an easy way to make nice art when you can't draw.
So practice, if it's you first attempt, know there is a long way before you can do decent stuff, don't get discouraged. Don't try to make clean animations from the get go, animated some rough skeletons to understand the dynamic, then refine it to what you look for. Find resources, make some attempts and show us the result, it'll be easier to give you specific advices.
Keep up!
