Need some advice with filing taxes (bought a house last year)

I normally file taxes myself since it’s pretty self explanatory.

I bought a house last year and made about 76k from my work so I want to make sure I get the biggest return possible.

I did some upgrades to the house
(it’s a multi family) so I have tenants. A lot of it was paid in cash since family members helped. Am I able to use this for deductions? What’s the max I can deduct without raising any red flags? Considering I don’t have receipts for everything.

Would you recommend just going to a tax professional? I of course waiting until last minute so only h&r block is available to help me before the deadline.

Any other information would help. I use turbo tax but I’m open to using any other software.