There are a lot of free DAWs, and they bring some sample sounds, like instruments, effects, voices, etc. But I guess you don't need to choose the DAW because of the samples. You can find free sample packs on the internet and be free to choose the DAW you want or you think is more easy to use.
In this link you have some free DAWs: https://thehomerecordings.com/free-daw/
What is the easiest DAW for beginners? Garageband is one of the
easiest DAWs out there to learn, however it is only available for iOS
devices. If you’re a Windows user then Studio One Prime or Audacity
might be good places to start.
In the other hand you have to search for free samples:
I hope it helps you to decide how to start.