It takes some practice ... keep at it. :)
Actually, if you really care, I use a Remington Model HC-815 electric, with a 1/2” gate for the top and 1/4” on the sides, neck with no gate. Takes 5 minutes over the sink, toss the hair into the commode, wash the rest down the drain, then I get into the shower for clean up. I figure the $25 I spent on the Remington has saved me hundreds over the years.
Of course, it’s one “style” of cut only doing it this way.