I think my site has been sandboxed ?

Hey
Sorry if this thread is in the wrong place .
I have a new site aprox 6 to 8 weeks old.
I added some content and it was appearing at the bottom of page 4 of G for the keyword I am targeting . It bounced around there for aprox 3 or 4 weeks.

I decided to buy a 500 social signals package of fiver and I also built manual backlinks,
Now my site is still indexed but it has completely disappeared from Google searches for my keyword, I use serpbook to check .

Any advice please
What can I do, keep adding content or start a new site?

Thanks for any help

Keep adding content and wait for 6-8 months, it will appear in top 10 only after a year if keyword is somewhat competitive. New sites dont rank well in google for competitive keywords anymore, you will have to be patient.

Keep adding content. You'll be fine.

Thanks for the reply's. I will keep working on it .