Onboarding for platforms with populated data in usage

I want to design the onboarding experience of a project management platform that is similar to Asana or Monday for example. I want to leave an optional guide for users on how to start creating certain items on the platform like a new task, appointment, etc. I can't help but notice that a completely new user can easily play around with all the features without worrying about breaking things. However, users who will join organizations later that already have data being used might be intimidated to play around with features fearing the possibility of breaking things. I'm not even sure if I should provide them with a guide that encourages them to start creating new items everywhere or not like the completely new users. Is it better to create 2 different onboarding experiences? or should I just create a single onboarding experience that doesn't encourage users to start creating new items everywhere? I also thought about creating something like a playground where users can go and just mess with the features without consequences, but I fear this might be too much for something that should be simpler than that. What do you guys think?