How to make a simple substitution cipher harder to crack

Simple substitution ciphers are one of the easiest ciphers to crack. Here are two methods to make cracking it a little bit harder. Introduction to simple substitution ciphers: https://youtu.be/uAEZEP_B6Pk Introduction to the Caesar Cipher (a variant of simple substitution ciphers): https://youtu.be/f2CgruPvb9k How to break a simple substitution cipher: https://youtu.be/AbwCHGowF_0 If you want to try breaking the cipher in the thumbnail (background), here is the ciphertext: AWeJ.wRxWeINeQJQIQJrzWoJwaxhWfJRRWURfULeWNxWohUocUNRxGWhxYUhERxeerPWarfWEJPPJoIRQWLrIW.UcxWJQtWFxYUhERxeeGWJQWJeWUWYrrEWfULWQrW.UcxLrIhW.UJzWoaUhUoQxheWErWer.xWeRxIQaJzYWfJQarIQW.UcJzYWJQWQrrWaUhEWPrhWLrIhWhxUExhWQrWPrRRrfWURrzYtWAPQxhWURRGWUWExQxoQJsxWzrsxRWJeWzrQWxzQxhQUJzJzYWJPWLrIhWExQxoQJsxWJeWhJYaQWABBWQaxWQJ.xtWXPWorIhexGWeJ.wRxWeINeQJQIQJrzWoJwaxheWUhxWzrQWLrIhWrzRLWrwQJrzWaxhxt_WfJRRWYxQWJzQrW.rhxWor.wRxiWoJwaxheWJzWPIQIhxWsJExret The plaintext will be available in the description of next week's video. My blog: https://falcon15xc.blogspot.com/ Blog Facebook page: https://www.facebook.com/Falcon15XC-944278925710463