A long time ago Dave M shared this concept of how to explain the gospel simply. Since then it has been tweaked and reformed often to suit the target audience.
Here is the classic “3x Circles Gospel Presentation” but with a more complete explanation than usual.
You can get what you need and ditch the rest.
For example instead of a full explanation of what baptism is you could just say that “you need to get washed clean” or similar.
