It definitely helps to get into the mood before starting. If I’m not horny, and I touch my clit, I will not feel anything. Also, try not to go into it with the focus or goal of orgasm as this can put a lot of mental pressure on you and end up working against you. Going into it like you’re just exploring your body may help you relax and hopefully you can find a spot that feels nice. I haven’t tried any dual toys yet, and I haven’t had a g-spot orgasm from a toy yet, so I also love clitoral stimulation. I personally like a vibe on my clit (I love my desire bullet and we-vibe touch) and my textured glass dildo for penetration 
If you’re up for listening to something, the sexual happiness podcast has some good episodes that you could find helpful, like: Masturbation Techniques You Need to Try, Sex, Self Care, and Relaxation, and Things Everyone Should Know About Orgasms 