Do you have a large social media following already? If so, then you can totally monetize a non-nude OnlyFans. You'll probably want to offer slightly more risque content then you normally provide, but if your fanbase is large enough and dedicated enough, then you can absolutely earn a good income as a non-explicit account.
If you don't have a large social media following, then you will not earn a dime. OF has no internal traffic - you have to recruit your own subscribers.
Basically, starting an OF is not as simple as just posting hot pics/vids…if nobody knows who you are (ie. you have minimal social media presence), then nobody will subscribe to your page.
99% of OF success lies in marketing/promotion/exposure. It's simple as that.