Is upgrading my 16gb RAM worth it?

Hello community!
This is my very first post on Reddit ever.
I'm looking for advice, please.

I have two sticks of RAM atm, 8gb each, see attached pictures.
TLGD48G3000HC16CBK 8gb DDR4 3000 CL16-18-18-38 1.35V
PVS48G300C6 PE000631 8gb DDR4 3000 CL16 1.35V

https://preview.redd.it/77agfyfd0uce1.jpg?width=4080&format=pjpg&auto=webp&s=cd38000dce4da2501696691508c09cffc53417b3

I often feel that 16gb is insufficient and would like to buy more RAM.

Questions:

  1. What do you think of my current mismatched setup?
  2. What is a smart way to expand RAM with my setup?

Thank you all in advance!

https://preview.redd.it/oq71e2sg0uce1.jpg?width=394&format=pjpg&auto=webp&s=9dbb8694b5b1157805c5365874f48a9aa25e7e16

https://preview.redd.it/zu7k85ph0uce1.jpg?width=395&format=pjpg&auto=webp&s=91f458c141a95f195cf52da48e97d23b650e81ae

https://preview.redd.it/wfotwiii0uce1.jpg?width=400&format=pjpg&auto=webp&s=816b943f42ee034de3dd385d690e145141f495eb