Look up Figma youtube tutorials for:
- components to templatize commonly-used elements
- autolayout to align and lay out elements quickly. Basically just select multiple elements and toggle Shift+A to turn on autolayout.
- prototype features to create a visual prototype without code
Use UI kits to put together a screen quickly
UI kits are design system component libraries that come with Figma by default
- In the left panel, click Assets, then the Libraries (📖) icon

- A modal will pop up in the middle of the screen. Click the UI kits tab on the right.

- You can add any of these libraries to your file to be able to quickly search and add premade UI components into the file. For example, say I wanted to design something for mobile:

- The left sidebar will populate with elements from the component library:

Once you’ve added the UI kit to your file’s libraries, it works just like any other design system added to your Figma file. You can just follow design systems tutorials from Youtube.
Search for the components you need, then drag them onto your canvas/artboard to start using them.