Antoine the wifi will be detect nativelly ?
It should, but nothing is 100% certain.
The card is identified as "Wi-Fi 802.11 ac Bluetooth 5.0" which are established standards, not bleeding edge. Lenovo uses mainstream components, so the chances are close to 100% that the wifi card will work with the Linux 5.15 kernel.
The card should also work with the ISO 5.13 kernel so that you can install Solus and upgrade.
But even if the worst happens -- the necessary wifi driver for that card isn't in the kernel -- I know from your posting on another thread that you know how to install a wifi driver.
Don't overthink.
Antoine on this latptop no ethernet connection ...
You don't need an Ethernet connection on the laptop. Chances are that you will not need to connect via Ethernet, but if you do need to, the solution is simple. Buy a USB-to-Ethernet adapter (cheap, remember, not expensive), plug the adapter into a USB port on your computer, and plug an Ethernet cable into the RJ45 jack on the other end of the adapter.