These roads are really close together. If you wanted to make a cul-de-sac (see image: https://t.ly/OAnXs or image: https://t.ly/Irp6h) you should tag a point as “highway=turning_circle” or “highway=turning_loop”. This gives the same effect, but it is the standard and also looks way better. Also, it might be a good idea to put more space between the roads if you want to have buildings on those parts.

This junction is very messy, and has very tight corners and the bridges are very short. It kind of resembles the other exit. If you want I can help you with this.

I noticed that all roads are unclassified, maybe it's better if you specify the road that it is. For example, roads with houses would be 'highway: residential' and if they were important roads for getting through the city I recommend you use 'highway: tertiary'

I think this road is tagged wrongly. I think this should be tagged “highway=unclassified” if you see this as a regular street but without residential function. Or if you’re not sure which type of road this will be, you can tag it “highway=road”. Seeing as this road connects other roads, it is definitely not a service road.

How would people get into this store, because there isn't a big enough connection to the road for a door.

Are these two gas stations different? Because they use the same tags. If they are different, I would try to add more tags to specify.

I feel like this cornes is way too sharp to turn. You should probably make a more realistic turn so people can get onto the highway.

All connections to the highway are tagged incorrectly. As the highway's tag is primary, the roads that link to the town should be tagged: "primary_link"

I think the oneway on this road should be reversed because Mecyna is a right side driving country, so cars couldn't get off of this road to get to Brittle ton. However, if this road was meant to funnel cars onto the road. The road can remain the same, the direction of the way should just be reversed.

It might be my mistake, but I can't find an entrance to the market. Or are you supposed to enter via the surrounding store. Because if so, it might be better to add some entrances or at least alleys to the market here and there.