Short answer: Keep the jacket as the statement piece and balance the rest of the outfit with simple layers and clean colors.
- Streetwear: hoodie or tee + jeans/cargo pants + sneakers.
- Smart casual: plain knit + dark jeans/chinos + boots.
- Everyday: neutral tee + denim + minimal accessories.
Tip: If the jacket is bold (color or patches), keep the rest of the outfit neutral.
If you share your jacket material and where you plan to wear it, I can suggest a safer option.