So I want to make these pants, but first I need to understand the pattern. I don’t understand how to cut the pattern or how to modify it to make pants from this image. I want to know how to trace or modify the pattern manually on paper from basic pattern

I’m a beginner in sewing.

They look close to our waralee wrap pants: Waralee wrap pants | FreeSewing

So check those out. However your pattern doesn’t seem to have straps, I’m not sure how those small bits at the front are attached. Would need to figure that out.

My guess would be hook and bar or buttons on the inside. I’m sure there are other options, but those are the ones I’ve seen most commonly on waistband fastenings.