How to find partners as a web dev agency?

Hey guys, hope everyone is doing well :)

I run a small web development agency in Cape Town, South Africa, and we've gotten great at delivery, but sales has been very difficult - especially with all these AI based web development agencies selling websites for incredibly cheap, it's hard to find people willing to invest into a proper one.

I've heard from some people that partnering up with other agencies is a bit of a secret sauce in our indistry, and it's something I would really like to do as I'm passionate about the websites themselves and not the biggest fan of sales.

My question is, how can I reach out to other agencies most effectively to try and find some people to partner with, and how should I structure these partnerships? Should I use LinkedIn, send out emails/give phone calls, should I do a 50/50 split or a flat rate, things like that.

I feel like we have a very good offer since we are based in South Africa and can thus deliver great results at affordable rates, but I am quite new to this and just unsure of how to create good partnerships.

Any general guidance would be very much appreciated, thank you :)