Hello
There are many tutorial videos (all working) about this on YouTube.
For my part I first transferred all my applications from my old phone with Clone Phone.
Afterwards I use Petal Search for the update.
For the applications that don't run because of GMS (which are very few) I use a web browser.
It could look like a complex, but it's not, personally I find it very playful as it reminds me of Androide in its early days.
I hope that my answer will be useful to you.

Thank you very much, I will try!

Hello
Thank you very much for your answer...
I will try it then! But if Google doesn't exist what is the search browser?