1099NEC and self employment deductions - income maximums?

I’m starting TurboTax and am not sure if figuring out self employment /independent contractor deductions is worth it since my husband has W2 job and I have 1 small 1099 NEC job with substantially less income. Are there income limits to getting any/all of the self employment deductions? Are these included in itemized deductions v the standard deductions, or are these totally separate?

 

And since so many people work from home now, are there changes to who can claim the self-employed/home based business deductions…as in working from home for a virtual company as a contractor?

 

Thanks for your thoughts!