Empty sprite pixels

Physics : matter js,
Phaser version : 3.55 stable,

Hello. I have a problem : every sprite of character from internet has empty space around corners, so he has collision zones with paddings :
IMG_20230302_014019
I tried to remove empty pixels by hand, but one frame can has 100px width, other - 113px. Also i know about json atlases, but sprites that i download don’t have they, no one. So how remove these empty pixels/zones?
Sorry for my English, i hope you understood.