Need some advice

So I used to run a dev agency for around 2 years. Left it because of ethical disagreements with my cofounder(he wanted to go for staff augmentation shit). I was the one running the show for the agency mainly doing sales, fullfillment and managing team. After leaving i decide to go the path of product manager but no success applied to many companies no success as they mainly want some one in their country. So coming to the point right now i am planning to ride back in to the agency scenerio but mind blocked on somethings. I can run the show alone but i need arms at the start as i will be building from scratch. I also believe that if i find a cofounder who can lead the fulfillment and i can run the sales funnel it will be much more efficient. Secondly i learned from my prev experience that i need to work on cold calling and cold emailing as that was not my way of reaching out to clients.

So anyone who has experience similar to me or seniors who can advice me do give me some of you insights. Also if someone is interested to partner up I'll love to talk but you need to be cheeta in development to work in the agency space internationally.(btw i have exp of 7yrs combined in tech)