Breast pump help!

Breast feeding didn’t go so well with my first one. It just wasn’t for me, and my milk also dried up at 4 months. I am expecting baby number two in May and I would like to try again BUT I think I’m going to mostly pump. Can anyone recommend a good pump that is made for mainly exclusively pumping? The breast pump I had for my first was a medulla I think? And when I would pump I was lucky to get two oz. but again, i dont think my milk supply was really that great? I dont know. I went into breast feeding blind sided and didn’t really know what I was doing. I’m hoping this go around is easier

TIA