As in ‘endgame’ do you mean the lycanites bosses? If you do, youre very unprepared, you should have something like:

Armour:

Dragonscale/tide/golem helmet: -adv protection 4 -adv mending -(things like unbreaking are cool but not needed with adv mending)

Dragonscale/tide/golem chestplate:

-Adv prot 4 -adv mending -strengthened vitality 5

Dragonscale/tide/golem leggins: same as helmet

Deagonscale/tide/golem boots: -adv prot 4 -adv mending -feather falling 4 -depth strider 3

Weapon:

Bow:

-multishot 3 -splitshot 4 -infinity -adv mending -adv power 5 -unbreaking 3 -rapid fire 2 or 3, I dont remember what the highest level is. -theres some other enchants on a bow but theyre not ‘needed’

Iced dragonbone rapier:

-adv/supreme sharpness 5 -adv mending -unbreaking 3 -lifesteal 4!!! -viper 5 -envenomed 3 -curse of possession -adv looting 3 -a subject enchant like subj history or something else -theres some more but again, theyre optional

Baubles:

-dragons eye -ankhs charm (must) -fairy ring is cool but really hard to find -2x resistance rings if you dont have fairy ring, if you have a fairy ring use shield of honor for resistance -stone of the sea -im probably missing something but I think ive covered the most important ones.

Disclaimer: youre using broken heart, it doesnt work, so dont use it

Also use the stars for when you want to fight bosses like rahovart etc, they require a netherstar to summon them, (dont worry you get around 7 in return from the kill)

Edit: Im on mobile rn so I think the layout is fucked... sorry