dear Desert dawn,
It appears that the adage "grass is always greener on the other side" applies to you ;-)
Relax..i understand your frustration with the curly hair. Sure, cosmetology is advanced & lots of chemical & mechanical straighteners' exist & lots of parlours' make their livings on this. However, bear in mind that any straightening et al will over a period of time (months to years) run the risk of giving you brittle hair & cause unnecessary 'hair fall'.
Deficiency of vitamins
& trace elements does not necessarily manifest this way but the best assessment will be to go to a 'trichologist' in your area & have a strand assessed for all eventualities.
A diet rich in trace elements such as biotin
, silica et al may just help you as oposed to medications. Google is a helpful tool nowadays to assist your individual palate
provided one knows what you are looking for.
Good luck & trust have pointed you in the right direction. Cheers!