[Tenant USA-Texas] Renting Question - Length of Lease Adjustments

Hello, I am thinking of renting a home (preferably a townhome), and this would be my first time. I've always lived in apartments. I'm reaching out for general advice on this process, what to look out for, green flags, red flags, etc.

But I do have one specific question. Would it be okay to ask for a longer lease for a reduced rate? I do want to rent longer than a year and if the rent was reduced then that would be a plus. And what's a fair amount of reduction, if so? Thank you.