Integration between CRM and Dynamics 365 finance and operations

Hello all ,

I am new to integration but want to do an integration between CRM and dynamics 365 finance and operations

The problem I have is that dynamics 365 finance and operations is a cloud, unlike CRM.

I read a lot of articles but nothing worked for me and I tried Power Apps and it didn't work for me.

Is there anyone who can tell me what to do and if possible I want step by step because as I told you I am new to integration

Note 

Thanks