I need help with choosing starting equipment

I agree don't get a camera body that's too old. Perhaps keep to one that was released within the last 8-10 years.

The 18-55mm lit lens will work, but in my experience they can cause weird internal reflections on the larger stars. Not a deal-breaker though, you can still get nice images!

The big question is do you plan to do deep space (nebulae, galaxies, etc.) or widefield astrophotography? Answering this question will help us guide you further.

Yes, as expressed already, most of those cameras are quite old. In general, getting the newest model possible would be better as there were generational improvements in noise, dynamic range, iso-invariance, etc. But do realize that many of us on Astrobin are now imaging with dedicated astronomy cameras that are far superior to any of those old DSLR models. I have a 1000D and an 1100D that were used to take a few of the oldest images in my gallery. They were useful for initial learning, but I quickly moved on as I gained some experience.

I purchased each camera used for around $50(USD) on Ebay; that was for the camera body only, so you may be able to find something for less than €150 with a little patience searching on auction sites. I did perform the astro-modification myself on both cameras, which involves taking it apart and removing the filter that reduces the red-sensitivity. There is some risk of damaging the electronics or sensor of course. There are some companies who still perform the modification service, but it probably wouldn't be worth the invested cost on an old camera like those. It is not essential to do the modification, but the un-modified cameras will have very reduced sensitivity to any objects consisting of hydrogen emission.

The 18-55mm lens will be the kit lens that the camera was probably originally sold with. The optical quality will not be great, but anything is useful to learn with. Just be aware that the focal range will be useful only for large regions of the sky or Milky-Way scale shots. Even the largest individual deep-sky objects will typically need a focal length in the 100-300mm range to resolve them with much detail - for example, the Samyang/Rokinon 135mm lens is a popular one for wider-field deep-sky astrophotography.

You also did not mention a mount, so we will all assume that you would be starting with a simple photography tripod. It is fine to start that way, but just be aware that you will be limited to around 5-15 seconds of exposure time before star trails start to become evident. Some kind of tracking mount is needed to take exposures for much longer than that. For any deep-sky objects, most of us are taking individual exposures of several minutes in length with tracking.