Can’t Cum

So this is TMI but. I am 14 I started masturbating when I was 10. When ever I masturbate I can never cum. I get to the bit were I start shaking. But I can never get past that ‘Wall’. I can’t get a dildo/vibrator because you know I’m to young. But it is so annoying. I want to try new things (I usually just rub my clit) but I’m to scared. And I want to go and buy a electric tooth brush but I’m not sure how good it will be and I’m scared I will waist my money.