This is a beautiful bag with a ribbed stitch. It is also called a crochet shell bag. Slip stitch and single crochet are the stitches that will be used in this pattern. One can use any color for the bag.
you can check out the free written version of the pattern here :

https://mirrymascrafts.com/2022/05/13/crochet-ribbed-bag-...

The video tutorial is found here:

https://youtu.be/IDYLGM7Ax0U

Materials needed include:
scissors, stitch marker, crochet hook, yarn/macrame.
the size of the bag can be altered by changing the number of foundation chain.