I want a female deshi cow in 2000 to 5000 rupee range

That budget is too low for a healthy dairy cow. For a female deshi cow, even basic animals usually cost much more than that. In your range, you may only find a very weak, old, or risky animal, so do not pay without seeing milk in your presence, checking all four quarters with a CMT kit, and asking the lactation month. For dairy, look at Sahiwal, Gir, HF cross, or Jersey cross. If you want, I can help you shortlist a safe buying range.