With discount brokers, whatever their brokerage calculators are showing are not correct when the trade is for multiple lots. Irrespective of abundant liquidity, the options in index are traded one at a time (even market orders) to add brokerage for every "trade" executed. So presently trading very selectively in F&O and more in cash.
In F&O trades the wrong decisions are very costly.
More comfortable with delivery trades
With proper position sizing, delivery trades are better manageable.