Q.How To Grow
I have a few raised bets I built myself every thing I plant seem t perish no matter how much or less water I give them I think its my soil since 99.9% sugar sand tried mixing it garden soil soil from Home Depot it might be to much sand and and still not enough soil help me I built to more beds but no soil yet I am tired of guessing. I don’t have any photos it all dug up.

Certified GKH Gardening Expert
You probably need to do more soil amending. Add some composted manure plus topsoil. Make sure the plants are getting the amount of sun they need. Water less often but water deeply when you do water. These articles should help:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/amending-sandy-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/best-time-to-amend-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/compost-as-soil-amendment.htm