A home office is not a deduction if you are a W-2 employee. That deduction was eliminated for 2018-2025 tax years.
If you are self-employed, you can still deduct a home office, but not under the circumstance you describe. A home office must be used regularly and exclusively for work. Regular means your home is your regular place of business and you don't have another regular place of business such as a shop, store or office. Exclusive means you must set aside a portion of your home exclusively for business and not use it for personal use. There is an exception for de minimis use -- for example, if you have a spare bedroom that is used exclusively for work as an office, but you store personal items in the closet, the bedroom/office is not disqualified just because you occasionally use the room for the non-business purpose of accessing the closet. But the general rule is the portion of the home must be used exclusively for work.
The only thing you describe that might qualify is if you use a closet exclusively for storing work items.
If you had space in your home that qualified, the deduction is calculated by adding up the square feet used for work and getting the percentage of the total square feet in the home. If you use 10% of your home's square footage as office space, then 10% of your home expenses (utilities, insurance, mortgage, repairs, depreciation) would count as office space. There is also a simplified option of claiming $5 per square foot as your deductible office expense, which saves you the trouble of saving all your receipts and bills for utilities, insurance and other expenses, and it saves you having to deal with depreciation.
