A good routine can be a short one.
Start with the basics, then make room only for what you need.
Updated
Begin with three jobs
Cleansing, moisturising and daytime sun protection make a useful starting point. You do not need an expensive shelf of products to begin.
Think about texture, too
Choose a moisturiser you find comfortable to use. Let each layer settle before adding the next; some formulas can roll or pill when layered. Follow the directions on your own products.
Make the next choice smaller
Use the ELARA routine finder to browse real catalogue options by your preferences and budget. Check each product page before buying. The finder helps with shopping; it does not diagnose your skin.