Curious, what does that mean "risky google"? If you're avoiding seeing some graphic images, that makes sense. If you're avoiding searching it because of implications for google's tracking profile about you and how it might then rebalance future searches, then that's a pretty upsetting reflection on google / tech status quo, and fairly on-topic here. We shouldn't be afraid to seek knowledge like from a library, because of analytics, y'know?

Exactly the latter

As far as I know, there is no evidence that Google tracks or records anything in incognito mode.

I have a bridge to sell you ...

Still believe they do.

It's a social network for different sexual preferences & fetishes.

Why not use an encyclopedia? Wikipedia is safe for work.

https://en.wikipedia.org/wiki/FetLife

there are definitely wikipedia pages that are nsfw...