[2019] Where is the obsidian here I looked all over the place on the map it says that it should be here anyone know where it is

There's none on the surface there. Just had a look at the map you're referencing and it's based on the GPS coords which doesn't account for vertical. The obsidian is actually in a cave, likely Caverns of Lost Faith. If you toggle the caves on/off you can see where all the surface obsidian is (almost entirely around the sides and tops of mountains)