You can get Crying Obsidian in Minecraft by the following methods:

• Bartering with Piglins: In the Nether, find an adult Piglin and give it a gold ingot. After inspecting the ingot for 8-10 seconds, the Piglin will drop an item, with about a 9% chance to drop 1-3 blocks of Crying Obsidian

• Mining Ruined Portals: Crying Obsidian naturally generates in Ruined Portals found in both the Overworld and the Nether. You can mine these blocks with a diamond or netherite pickaxe to collect Crying Obsidian

• Looting Bastion Remnants: In the Nether, Bastion Remnants contain treasure chests that may have Crying Obsidian as loot. Be cautious of hostile mobs like Magma Cubes in these structures

Note that Crying Obsidian cannot be crafted or used to make Nether portals. Its primary use is to craft a Respawn Anchor, which allows you to set a respawn point in the Nether

. In summary, the best ways to get Crying Obsidian are bartering with Piglins, mining it from Ruined Portals, and looting Bastion Remnant chests. Make sure to use a diamond or netherite pickaxe to mine it successfully. Also, wear at least one piece of gold armor to safely barter with Piglins in the Nether