Selling cash-secured puts and covered calls is one of the safest things you can do. You take on less risk (and less reward).
If you get assigned, that's great, immediately sell a put. I've been able to do this against SPY/QQQ, rolling and never getting assigned. So it's all gravy on top of the existing market returns.
You can eke out a few pct a year this way, but from a SWR perspective it's like doubling your hoard.
I think you're talking about the wheel strategy. Keep reading this at r/thetagang but I believe the premiums lately have been higher than normal so that's why lots of people suggest this. HN was one of the last places I would see this suggested.
If I'm underleveraged, on a weekly expiration date (MWF) I'll sell a bunch of options a few strikes out a few hours before expiration, with stops. Usually they decay down and you get a lot of premium in an hour.