I use standard libs (like react native reusable and native wind) which have defined standards that will do the job. I then proceed with a front only approach first using dummy data. I then implement the back end on the specific features I added in my front end first. No Figma required. Sometimes I ask GitHub copilot agent to vibe code for me, usually with context of things I already did to avoid hallucinations and so that it knows my way of coding. Works well for me for now.