Just zig zag stitch them 😎 (overlock pockets and side seam allowances *before* sewing the side seam if using inseam pockets? Otherwise you can’t overlock the SA at the pocket opening, if the seam’s already sewn)
Check closet core Hong Kong bias bound seams
Flatfelled – inside a sleeve 😱
French seams! With pockets!
Very ambitious french seamed and faced pockets….. http://malepatternboldness.blogspot.com/2016/02/ladies-tailoring-skirt-side-pocket.html