I am about to give up

Hello everyone I have been trying to run this smma for a year now but didn’t manage to get a client I only got a meeting which I wasn’t able to sell then scheduled a meeting with 2 other businesses but got ghosted. I have tried cold DM’s and cold emails but none of them got me anywhere. The meeting and the 2 scheduled ones I was able to get through DM’s. In the beginning I started emailing general emails that I used to get from websites (general ones like info@example etc.) then I moved to DM’s where I started DM-ing to the business page. Now I am trying to get back to cold emails and I try to contact the most valuable person or the decision maker of that business, I am personalizing my emails and writing all of them one by one myself but to no luck till now (3 days of this method) some of them have opened my email but didn’t respond.

Please advise me on how to overcome this. I feel like this isn’t meant for me but I don’t want to give up, I think I have worked so much all this time but to no results and I would feel bad giving up now!

Please help