Feeling dejected, demotivated, loser

I interned at a company for more than 10 months. Gave my heart and soul to it They made me work late nights, gave me so much work I completed them all And now they denied a full time offer citing budget reasons I feel like a loser now. This is so not fair. Now placements at college are also over so theres no hope left Completely loss of words. I don't know what to do Can someone please guide me