100% agree. I have shallow veins that stand out on their own, and can easily got through them even with an 8mm. A shallow angle (for me about 10-15 degrees) is the only way I can get in and most importantly stay in. Try different locations as well. But strongly recommend the upper arms/ crook area. Take supplements like L-Argentine, magnesium (about 1,000,1,500mg a day I take a chelated complex of 5 different forms oxide is worthless btw), D3, potassium, zinc, low dose aspirin, and low dose ibuprofen, (aspirin thins, ibuprofen helps prevent clots), eat, and drink plenty of fluids (not soda it dehydrates you(I like to get Gatorade powder and add it to the water bottles makes it easier to want to drink, I also take a B-complex.
Btw the “bevel up” means that the pointy part is down and the hole is facing up.. in case you weren’t sure like I was.