Okay, I went away for two days, but my parents took care of all 5 of my bettas. When I came back, Stella-luna (the female who laid eggs) and Perseus Maximus (the new one that replaced poor Little Joey Caesar) died! This was RIGHT after Little Joey died, too! And not to mention Johnny! So, when Mr. Jingles, Ophelia, and Violet die, that's it... NO MORE BETTAS FOR ME!
i had four or five deaths, back to back. had to watch my favorite female wither and die, despite doing EVERYTHING i could to stop it. it's hard, losing so many back to back. :< i'm sorry you lost so many.
take a break, care for the ones you have left, and make their lives as good as you can. maybe one day you'll find one you can't pass up at all.
so did i, tell your parents it wasn't your fault those betta's died, and you deserve another chance on having two because you did tell your parents on watching your betta's, and they failed. i know how to break parents a bit, either tough or easy. but sorry to hear they died