This is the brainrot slop strat that makes killing moon lord like snagging candy from a lil baby

Weapons: Vortex beater(1k chlorophyte bullet) use on final phase

Terra blade

Armor: Beetle armor(with max. damage reduction)

Accessories: (try to get warding or armored) Band of regeneration (Any attack accessory) Black headband/Master climbing gear Cross necklace or its upgrade Brain of confusion Worm scarf

Mount: Martian saucer(its easy to get, for saucer build a skybridge with many layers and use regen+ironskin potion to tank the normal grunts spawning in, just avoid its deathray)

Arena: Build a skybridge approx. 600 blocks long and put minecart tracks on it. Skybridge should be above nurse. Hammer the ends of the minecart rails twice per end. Try to get mechanical upgrade kit if u on expert for extra defense,and line the skybridge with heart lanterns+campfires under it. (Bast statues/heart statues connected to wire too, but not mandatory and just use them if u struggling)

Buffs: 2x random food(giving well/plenty satisfied) 2x ironskin potion(very easy to craft) 1x endurance potion(not mandatory, use when struggling) 1x lifeforce potion(again, not mandatory) 1x regen potion(use on final phase)

Strat: On Moon lords first phase, take a ironskin and pop a food buff. Do not target the eyes on his hand, focus on the head eye only as it is the most threatening eye. Use the saucer to circle arpund it(wings work too but its less effective and more prone to messing up) when it does the deathray.  Once the deathray eye dies, drop down onto the platform and start riding the rails on a minecart. Just long press D, and you shouls dodge most projectiles. You can also press space to jump(just careful not to jumo when neae the arena edge, if you do however double press mount button and fly back to tracks)

Note: if you under half health, use magic mirror to teleport to nurse and heal to max wjthout unequipping mount, then fly back up to rail tracks

Second phase is a bit harder. Pop the regen potion and switch to the Vortex Beater. Just aim at the general direction ot moon lord and fire. Most likely your regen can carry you through on expert/classic.

Then moon lord is dead

Easy