Kroko

They aren't made in eu.

goodram make stuff in Poland.

https://www.goodram.com/en/categories/consumer/

Waydroid support MicroG

You can install app from Android Debug Bridge (adb). It will bypass all new restriction.

List of all Linux phones https://linmob.net/resources/#smartphones
Next gen Jolla Phone https://forum.sailfishos.org/t/next-gen-jolla-phone/23882

There are phones supporting Linux https://linmob.net/resources/#smartphones

https://xdaforums.com/t/bootloader-unlocking-option-removed-from-one-ui-8-0.4751904/post-90249798

One UI 8 will block oem unlock and relock bootloader in all Samsung.

You should buy SoC only made by TCMS. It even more important whether It is a Snapdragon or a MediaTek.
Right now, the most important specification is battery capacity. Some Smartphones are already available with batteries up to 7000 mAh.

https://www.kimovil.com/en/where-to-buy-poco-f7
https://www.kimovil.com/en/where-to-buy-realme-gt7-12gb-512gb

https://nanoreview.net/en/soc-compare/qualcomm-snapdragon-888-plus-vs-qualcomm-snapdragon-6-gen-3

It is bad. It looks like less powerful that 888+ :L It even made by Samsung... which means it uses a worse manufacturing process than TSMC

They did have name mapy.cz

There aren't many good options for Linux phone... https://linmob.net/resources/#smartphones