Betta Fish: starting over

imm embarrassed to say i lost my first babies to a columnaris attack that i notice way too late. i lost all my bettas. i am still super sad but the past few weeks i felt so horrible for doing them wrong and not catching it sooner. i’ve since treated my tanks and let them sit. i’ve gotten 3 new bettas but i kind of still feel like shit for ultimately replacing my original bettas. i’ve only named one, her name is banana. but i cant seem to be able to name the others, i just start thinking of my passed bettas names. sorry for the rant, just unsure where to share as i don’t have many fish friends. fish tax in the pics. first one is banana. first two are females and the last is a male. i want to post the ones who have passed but at the same time i know i cannot dig myself deeper into despair. anyways, happy friday