Full Stack Dev Needs Help with Marketing & Promo : murderhomelesspeople | Torhoo darknet markets

This sub is for IRL I understand, but my question is slightly adjacent to IRL. I’m a full-stack developer with a lot of experience building and maintaining medium-sized e-commerce sites. Lately I've been developing for a lot of cannabis and CBD sites for clients. I use bulletproof hosting and robust security protocols to ensure seamless operation. Time to launch my own sites. BUT, how to market/promote? Clients wont share that information with me.

Some data from existing sites developed and maintained by me:

Traffic Sources: ~60% of traffic comes from direct URL inputs. So no blackhat PPC is being used
Traffic Volume: 20k to 300k visits per month.
CVR: 6% to 13%.
AOV: ~$129.
With that data you can extrapolate the revenue I'm seeing and that they are not using any form of paid advertising that uses linking.

Despite knowing how to build and maintain these sites, I lack the puzzle piece on how clients are promoting/marketing them. Traditional PPC like Google AdWords is not an option and existing clients aren't using any sort of creative ways around that. So, how are they driving this traffic? How can I get traffic to my own site?

I have a suspicion as to what how they may be promoting, but I don't want to type it because it may skew what you come up with. I'll share my idea later. I'd like your thoughts on it first.

I already have order fulfillment set up with vendors I already work with and have history with, etc etc. I just need the highly targeted traffic.

Any insights would be greatly appreciated. Thanks.