Converting my PC to GPT from MBR

So I have a very old windows SSD that is MBR, ive basically used this drive for windows since I got my PC years ago, however I have completely upgraded my PC over a long period of time, the only thing that hasn’t changed is the 148gb windows ssd. I have 3 other drives two 2tb M.2 drives that store all my pictures and games, and a 500gb SSD that is empty and can be used as my new windows drive, they are all currently in MBR, I tried to upgrade my windows drive to GPT using the CMD but it gave me errors I believe it is because I have 3 partitions on the drive, system reserved / Windows / system recovery I read that you can only convert a drive to GPT if it has 2 partitions, but I cant figure out how to move the system recovery to a different drive.

Basically im wondering if I should just fresh install windows or if I should keep trying to convert everything the GPT, I feel like fresh start might be good, but I dont want to lose my pictures and save files that are currently on my PC, any help would be appreciated.