Please recommend me some nice bikes

I am 18yr old and I want to buy a new bike...I don't have much experience in riding bikes... I have been riding on multiple bikes for example.. splendor don't know the exact model, my dad's 20yr old calibre which is illegal to ride now, my dad's hero honda, and an fz bike, the best and easiest i felt in driving was the fz which is of 1.5 lakh.. but I don't have that budget... So I would prefer if u guys can recommend me some sports bike under 1.2lakh which has very nice mileage like very very nice cuz mileage is my priority and next is easy to ride.. like overall experience.. and I am a very new to all this so l basically don't know anything about bikes soo any help and recommendations will be appreciated