Minecraft launcher not opening

I've been playing Minecraft for 2 weeks not  long after January when my Minecraft wouldn't open anymore. I've tried everything but it still wont work. I am very mad since I did buy Minecraft with my own money and I would either like a refund or a new Minecraft java edition with a brand new file.  I really like Minecraft and have it on almost every device I own. I can't re-buy it and I cant redownload it but seriously please fix this issue. Also I love Minecraft and I'm slightly upset that this wont work.