Get your taxes done using TurboTax

I  have been a General Contractor for 10 yrs and I  honestly do not understand why I should have to pay tax on materials that I already paid tax on when I purchased the material.  How does that make any sense? If you 1099 my business it should ONLY be for services rendered, period.  Not to mention the way supply/demand have been since COVID hit, so I should have to pay more tax because some executive in a suit decided 2x4 lumber should inflate from $3.49 to over $20 for the same exact piece of lumber? Meanwhile my margins already have been razor thin, the small business guy has to take the bullet?