Stuck and unable to decide Need Help !!

Hi All,

Actually I am stuck in a project currently in a role that was once my aspiration. But when I came into this Role i realised that its way different than what I had thought about.Now, the situation is that I have dropped papers bcz I want to go back to the earlier tech stack that I was working now.

Now, in case I have to revert my papers back what should i say to HR and will HR give me role change or option to get release from project and find the technology that I am looking for? As I have not mentioned all this reason in my resignation email.. I just mentioned some personal reason.

Now I am not understanding that what I should tell HR so that they allow to retain me and I get the technology that I want and don’t have to continue in my current project and current role.

Please help genuinely im really stuck.