I think these articles might help.
https://www.wikihow.com/Tell-a-Lie-Without-Being-Caught
https://www.wikihow.com/Become-a-Good-Liar
https://www.wikihow.com/Lie
How many posts you have, i think? i can't explain it well, so ill just link this thread here:
https://strayfawnstudio.com/community/index.php?/topic/2817-what-does-the-grey-dot-mean/&tab=comments#comment-10666