Looking to provide SEO services by teaming up with an agency

Hi, I am looking to offer SEO as a service by partnering with an agency. I have experience in seo(ecom & saas) and working as a freelancer. But it is very difficult to find the clients while working on the projects. This is the reason to collaborate with any partner or agency who could outsource seo projects. Let me know your ideas to scale the biz through partnering with reliable agencies? Thanks