What is "easy" to you is not what's easy to others, this is the partners and DEVELOPERS part of the forums.
Use the discounts api
https://shopify.dev/docs/apps/selling-strategies/discounts/getting-started
XYproblem:what is the goal of "dynamic" discount codes.
Per description you will need to either build an app, or find an app on the app store to either generate the discount codes, or allow you to upload a CSV of discount codes you generate yourself using an app like matrixify.
There are also automation apps like mechanic for scripting api automations
Example: https://tasks.mechanic.dev/generate-a-discount-code-when-a-certain-product-is-purchased
If your a merchant and have the budget and need this process or automation done for you then contact me by email for services.
Contact info in forum signature.
ALWAYS please provide context, examples: store url, theme name, post url(s) , or any further detail in ALL correspondence.
Good Hunting.
