Does not pick up relaunch

Hi Guys,

I currently face an issue, and I am not sure if there is anything to do from my end, but would like to hear your thoughts!
I was told by a few other SEOs that they faced the same and it fixed itself with the next core update. But I am not a friend of just sitting and waiting around.

I relaunched my site on a new domain. The first days looked very promising, google picked up the redirects and the enhancements report looked good. started getting a few #1 rankings but everything started to drop.there are no errors in search console and I checked if big G can read my content, all good there.

However, when doing a site search it shows me only 4 results. When i do the site search with a page that is not listed, I can still see that it has been indexed. Im losing patience and need my rankings back, affiliate partners started to complain since they dont receive any traffic anymore.
Anyone any idea what the heck is going on? Would be happy to get some feedback

Oh, and for some reason every now and then I rank on page 1 for a few days with a keyword and then it drops out again. It just doesnt make much sense to me