Best CRM tool for a small consulting company with only a few clients

We are a consulting company with 7 employees in Germany and are switching from Excel to our first CRM tool. We currently have 6 customers and acquire an average of one customer per month. We use Google Workspace and want a simple tool, but are also open to automation futures as we are actively trying to be very efficient.

At the moment folk, copper and pipedrive are our favourites.

Do you have any recommendations for us?

Thanks for the help