It depends on if you are a W-2 employee or do you get paid with a 1099.
Sole proprietors receiving income reported on Form 1099 could possibly deduct a portion of internet service on Schedule C.
For the typical W-2 employee, unreimbursed job-related expenses aren't deductible in 2024.
Here is an article you may find helpful: Are Unreimbursed Employee Expenses Deductible?