How come everything changed so quick?

Fck man like everything changed from like 3 years ago... i feel out of place when i was in 8th grade i had my old cool friends and everything was ok... i was never popular i was just the kinda chubby kid with some friends but at least i had friends.. when 8th grade was over i decided to go to live with my mom to venezuela because i didn't get along with my dad here in miami.. i was born here in miami but my parents are south american...but anyways i went to school over there and i ****** up my grades made no friends and it was just terrible i came back after 9th grade and started 10th grade but everything just changed to quick, everyone changed they are who they used to be and it has nothing to do with maturity its just idk and i feel out of place now im in 12th grade and my 11th grade was kinda ok.... i have never gone to a party or homecoming or any school activities because i got not clothes or transportation besides my bike and i dont even have a phone maybe this is why im failing to adapt like other kids who have a lot more stuff (not saying material is important but its is nice to have).. i just feel like a total loser i wish i could make good friends and a have a girlfriend if iwasn't to shy :(... anyone has adapted after something like this? **** some people in this world are fcking hypocrites. help i feel like a loser my only interests right now are sportbikes i really wish to learn verything about sportbikes and hopefullly learn to ride them but i i cant even get my fcking permit cuz my dad is an a$$hole who hasnt helped me for the past 3 yrs in except give me 5 dollars for lunch money and fcking buy me shampoo every 5 months sh!t all of this in fcking miami