Why is all This happening?!?...

Ever since my grandma's death back in late 2021 everything honestly changed, after he death i literally cried every single day for the last 4 months ( i get that i was upset that she died) it's honestly weird that just everything just went downhill; i was bullied, i literally almost died! I got accused off doing bad stuff , my cousin died (he was 9) etc... I have 98 reasons to leave but there is 2 reasons i don't want and its: i don't want my family to be sad, i will leave my cat, my love, best friend and my dad