this is a suggestion: why i think almost nobody likes your pack is the reason because the dirt is too "orange" and the grass too gray. if you want a vivid and colorful simplistic pack you should reverse the colors, so dirt is darker and more saturated while the grass is greener and brighter. a way to do this (if you dont already know this) is under the "textures" folder theres the colormap folder which you can make the grass and foliage.png files a little more vivid.

for example: if you wanted more vivid grass, i would suggest keeping the default colormap and making the grass overlays (grass_block_side_overlay and grass_block_top) to something similar to the color: 78BC38
and the dirt to something similar to the color: 9E6937

also, for the colormap of the grass the grass top and grass overlay has to be gray, therefore i would recommend making the grass_block_side.png file the actual whole image (you know, the hanging grass over dirt) and then just copy the hanging grass and paste it into the grass_block_side_overlay.png file

well, i mean, could you add a few more images