Investment advice required for buying a plot in lahore on installments

Aoa dear experts
Can somebody please guide me where to buy a plot on installments.
I have 8 lakh as down payment
I can pay upto 80,000 per month
I am in saudi arabia and i want to avoid the risks about authenticity of the plot and housing society.
Kindly guide the best place to invest where i can have faster and secure return.