The tiles in the shower are laid "crookedly"

If it bothers you, I would discuss it with the developer / craftsman.

Such tiles are better laid by the best tile setters, even if they are placed on mats; the extra cost is worth it. The deviations will certainly not be enough to even attempt to demand a correction.

By the way, this is what the tiles look like beautifully tiled (catalog photo):

Sorry, but nothing is visible. The image cannot be enlarged, nor is the quality sufficient to see even a single grout line. What are they called? Then one can look them up on Google if interested. However, everyone probably knows what small format or mosaic looks like.

Edit, I just see that you named them

No, they are not tile mats but individual tiles. I will try to take a proper photo at some point where you might be able to see the deviation better. Anyway, it seems to be normal. I find it very strange, but well, that's how it is. It's not the end of the world. I wouldn't call the tile really small format. The long side is about 20 cm. There are smaller tiles.

My unprofessional opinion is that it is very difficult to lay "perfectly." It requires appropriate experience. Possibly, this was not present.

edit: maybe a silly comparison, but I just set up dominoes with my daughter to topple them into shapes. I tried to place them meticulously, straight, at the right angle. It never turned out the way I initially imagined.

I will report. In mid-November I will get the keys and will complain about the shower.