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
HongKong seams and the hemline
Flatfelled – inside a sleeve 😱
Sewing Glossary: How To Sew Flat-Felled Seams on Sleeve
French seams! With pockets!
Very ambitious french seamed and faced pockets….. http://malepatternboldness.blogspot.com/2016/02/ladies-tailoring-skirt-side-pocket.html