im dyeing or dying

its that time again! the dye in my hairs all washed out  
THEREFORE to maintain my joyousness im going to redye it! well first considering my natural hair is black im gonna have to fucking bleach it first (lets hope my hair doesnt fall out or i will cry)

ive been considering trying out new hairdye brands because im starting to get pissed off how quickly the dye comes out of my hair,,,, like its just straight up COMPLETELY gone after a month or a half EVEN after i do all the protocols to try to make it last as long as possible (ex - cold showers and whatnot) 

i REALLY REALLY REALLY like vibrant bright colours in hair... very magical. 
i only ever dye parts of my hair because im too afraid to try to bleach my entire head cause like WHAT IF I END UP BALD IF I MAKE ONE MINOR MISTAKE??? 

but anyways basically i wanted to ask if anyone knew some good recommendations of vibrant hairdye that doesnt wash out too quickly... while i do care for my hair a lot i dont actually know a lot about hairdyes and bleaches.... i know i should probably know more about it IM SOORYRYY

ive seen a few people speak well of brands like manic panic or splat, and they seem much more affordable compared to other dyes that cost like 50+,,, so ive been considering trying those!!

but you know i like to try to articulate my thoughts by typing whatever the fuck down so while it is redundant of me to be like "oh chat please id love some hairdye recommendations!!" just to turn around to say i was already considering some brands,,
im gonna be so real i have no idea where i was going with this last paragraph but fuck it we ball

BUT BASICALLY VIBRANT HAIRDYE THAT DOESNT DIE AND WASH OUT AFTER A MONTH PLEALSE AND THANK YOU