It feels impossible to lose weight.. 😔

It's starting to feel impossible for me to lose weight and it's really depressing me. I can't get a straight answer about how to do it. I'm vegetarian so when I "diet" all I can eat is vegetables and fruits but everytime I try to start a diet I end up giving in to junk food over and over again. I'm 14 so I can't go to the gym because they are all for ages 16 or older so I can't try to lose weight and get healthy there. I'm only 14 and I weight 195 pounds. I seriously need to lose weight and I badly want to but I just really need help with knowing what to do. I feel trapped in this and like I'll never lose weight. Someone please help me.