How do i get a smooth pubic hair shave?

im a man and i started shaving about a week ago, i shave but it never gets as smoth as i want there are always little hairs that are IMPOSIBLE to take out, i researched it here and people said to cut in the direction opposite to the hairs, i tried it and it didnt work there were little cuts everywhere. it doesnt hurt but its kinda red and with some pimples. i cant use laser because im a teen and well i cant aford it and i cant wax because i dont have money and aparently it hurts, and i cant ask my parents to buy some because you know... awkward. some people said to brush the razor softly but the hairs are too small to cut softly. so does anyone know how to get it soft?? btw i use shaving cream and a razor (gillette mach 3)... (serious answers please)