I work from home. My company does not reimburse my expenses for Internet, space, printing ink, phone, etc. They provide a laptop and monitors with a router only.

If you are a W-2 wage employee then none of your employee business expenses are deductible on a federal tax return due to the tax code changes in effect for tax years 2018 thru 2025.

Expenses related to work as an employee are not federally tax deductible.  Depending on which state you live in, you may be able to deduct the expenses on your state return.  If so, you would enter them in the federal section and they would carry over to your state for most states, some states, you have to enter the expenses directly in the state section.

 Which state do you live in?