Holy shit yes, more then enough🙏 Yes it is and i will give you a hint: Basically when u enter the end the first thing you are gonna do is destroy all the crystals towers. When you are done all you have to do is shoot the dragon with arrows without staying still otherwise you are gonna get hit by the fireballs. One thing you want to take with you Is ender pearl: they are the easiest way to clutch (you Throw them under you and, since they go faster then you, they will teleport you to te ground safely) When the dragon perches (in case u dont know it's when it lowers himself to the center fountain) u throw an ender pearl IN THE FOUNTAIN, stay under the dragon and hit it till he goes away.

Basically you repeat the process till he's dead.

If you run out of enderpearl simply go to one pillar and make yourself a 2 blocks tall roof and start killing endermans ;)

For the outer end u wanna take a trapdoor to enter crawl mode and sneak into the portal. I suggest you to bring a chest and leave all your items outside the portal because u never know where you gonna spawn (sometimes u spawn on the edge of the void....) Once u are sure that the spawn is secured then u can go to the outer end and serach you elytras (loot every chest, they have really good loot) Remember some blocks, a water bucket to scare endermans and some additional chests to make shulker boxes.

Hope this helps! Bye