When the market is sideways it usually moves between ranges.
By using basic technical analysis you determine where the support and resistance is.
See
this video for a visual.
SPX has strong resistance around 2105, so I would sell something like a call credit spread above that range so the probability of the options expiring worthless is greater which means I get to keep the premium.
Example SPX right is 2077
SPX 2120 SEP call is worth 2.95 which I would buy
SPX 2110 SEP call is worth 4.60 which I would sell.
In this example I would risk about 1300$ (since the spread is 10points wide (2120 - 2110) to make 4.60 - 2.95 = 1.65$ x 100 (since a option contract concerns 100 shares) = 165 $
ABout 10% ROI in one month. Doesn't sound like much but you have a 70% chance that you will make it.
I do not want to make this sound easy as there are more things to watch out for like volatility, FOMC meetings, movement of the underlying etc.
But think about. Option selling is like the insurance.
You pay them premium so that they can insure/take over the risk you would like to be insured against in case something goes wrong.
And mathematically they already know how much they have to payout of all the premium they are receiving and the odds are with them.
* Disclaimer * I'm still learning how to trade options