Hi Hazel1111.Angel,
If it helps to know, you're far from the only young person who's interested in BDSM; if you poke around the boards, you'll see quite a few people who are also wondering how to safely explore it as minors.
Do you find getting really into a fantasy helps with that frustration you feel during masturbation at all? And when you say you're not able to feel the "pressure" you want to feel, can you tell me a little more about what feels like it's missing for you?
If you're curious about sex toys, you could try D.I.Ying some:
D.I.Y. Sex Toys: Self-Love Edition. If you want to ask someone in your life to buy you one, we can also help you work out if or how to have that conversation.