WordPress ships a large number of blocks. Many plugins add even more blocks to your WordPress. Therefore, WordPress offers a Block Manager feature that allows you to manage your blocks. To access the Block Manager, click on + New > Post:
The click on the “vertical 3-dot icon” and then Block Manager:
You should now see the Block Manager:
You can now see all the blocks available to you. Only the block that are checked are available to someone writing a post. You can also check / uncheck entire groups of blocks.
Once you uncheck a block, it is not deleted from WordPress. It is simply becomes unavailable to someone creating posts. If you are going to be working with WordPress f