I'm not generally familiar with European trees, but 1 and 2 look like some variety of birch. I can't tell what 3 is, beech is possible but I wouldn't try to say so without more info. 4 suggests hickory; are there hickories in Europe? The growth pattern of 5 reminds me of maples, but I would need to see a closeup of twig and leaf before saying anything with confidence. 6 could be a black birch or a black cherry in the US, but I don't know what European trees would be similar to those.
Hopefully someone from Europe will chime in with more localized knowledge.
posted 5 months ago
I don't think there are hickories in Europe. Could the one with the triangle be hornbeam? The bent, stripy one might as well be wild cherry, I thought of that too, looking forward to spring to figure that out