Breast pumps

Is a breast pump an essential if you plan to breastfeed? I planned on it with my son and I got a manual but due to a complicated delivery that left me with 7 broken ribs, I couldn't and never could get the hang of pumping and had no support so I gave up and ended up with mastitis. This time around, I really wanna do it and stick to it and I just don't care if I have anyone's support, I'm bound and determined to do what I feel is best for my baby. I don't have insurance so I know they can get pretty pricey and I'm wondering A) is it essential and B) what's the best bang for your buck? Lol. Y'all, I'm flying blind right now and trying to learn as much as I can.. sorry if this sounds stupid.