How do I orgasm strongly now?

So for info- I’m F bisexual and have a long distance gf and have been using a toothbrush as a vibrator since I was 12 and my orgasms we’re strong then- I recently got a vibrator and dildo and I can’t O from penetration alone and the vibrator I have is too low powered so I went back to the toothbrush but my organs are so weak and not worth it- I just need help. I also have what I think is scar tissue around my clit from using the toothbrush and making myself bleed.

If anyone can offer advice I’d be so grateful- they’ve been so disappointing recently and it’s starting to get too me. I’m also hypersexual because of hormone imbalances to do with PCOS.