It’s easy to reuse patterns and blocks you create around your site. Here’s how..
1) Create the pattern/block you want to reuse.
2) Click on pattern/block, click the 3 dots and select create pattern/reusable block.
3) Give it a name and click create. If you want it to reflect future changes on every instance of the pattern/block used across the site, keep the synced button on.
4) You can now insert it like any other pattern. Just search for it by name for quick access.
Good luck with your site!