I remember my Mom planting carrots when I was a kid. Her first year... a disaster. Very few carrots and they were “twisted”. She thought that she had worked the soil but it was clay dirt. So... she brought back bags of soil from a region she grew up in Pennsylvania. Dark, black soil and that year was a bumper crop of midgets and other types. Thus... I am wondering about your soil?!
My garden is a raised box about 16 feet by 5 feet. The normal soil where I live is river bottom land...very fertile... and my box has a mix of that soil, some bagged soil, cow manure, chicken manure, soil conditioner and some black loam left over from putting in a new lawn. Brings it up to about 18 inches above the yard.
Everything grows great in it. The only failure I have had was the carrots last year but I think Red_Devil 232 pointed out my problem as growing season is hot hot hot in the Northern California valley interior.