What is the first thing you do in survival?

First thing is u need to get some wood make them into planks then make into crafting table then make sticks and after that make a pickaxe and go for gathering stone by mining them after mining stone make a stone pickaxe and after making stone pickaxe go get some coal make some torches and go for cave exploring to find iron to make armour and tools and if lucky then get diamonds after getting diamonds u can get obsidian make a nether portal find a nether fortress and then kill blaze to get blaze rod and then convert into blaze powder after that kill ender man which drops ender pearl and then craft eye of ender bye placing blaze powder and ender pearl next to each other in crafting table and then throw eye of ender to find stronghold to get to the end portal frame and place eye of ender (u need 12 of them) and then enter into it then first blast the 10 towers with your bow and kill the ender dragon after that jump into the portal which spawns into middle of end island and the game is over.

Hope that it is helpful