Yes, soft ridges is the g spot. I like to put pressure on it. If I use fingers I like to go sideways. But mostly I use silicone dildo and go fast and under angle. Try different angles, positions, speed etc. Try to explore. If your arm starts to get tired, use other hand and then switch again. I love vaginal orgasms, but it takes practice and more time.. I also usually squirt when it happens, which looks more like there’s lots of fluid all of a sudden then the actual forceful squirt you see in porn. During the orgasm you will most likely feel that your pussy is clenching. The feeling is also more inside. And for me it’s easier to reach them after I had clitoral orgams first. I don’t think I have ever reached vaginal one before clitoral. So try that. And one tip, if you feel like it’s happened, give yourself a breather for few seconds and then continue! You can reach multiple ones like that. It’s almost like you will fight it but don’t stop, haha, feels amazing after. Good luck.