Backlinks in 2023, what do you do?

Hey guys,

Question of the day, how do you backlink building here in 2023?

I have tried:

1. Adding to a lot of startup directories - didn't seem to do anything.
2. Bought some Fiverr.com backlinks - same, not good results.
3. I found this site startupranking.com, but I haven't tried it. Maybe someone can tell me if it is good/bad before I "invest" or "waste" money on that.
4. I started guest posting as that seems to be the most recommended path, but it is also quite time consuming.

You got other ideas? Maybe someone should build a network site for guest posting to ease that path :)