@WandersonS13 Thanks for that feedback, and welcome to the MS Edge Insider's community!
We do have some functionality around that, which you can adjust on this Settings page: edge://settings/search. However, if you are looking to manually select the search engine each time, feel free to submit that suggestion through the in-browser feedback tool (Shift+Alt+I) so it can go directly to the Search team.
Hopefully that helps!
Project & Community Manager - Microsoft Edge