The expression of unpleasant experiences in a mild way is

The expression of unpleasant experiences in a mild way is called euphemism. Euphemism is a figure of speech where a harsh or unpleasant word or phrase is replaced by a milder or more indirect one to make it less offensive or less disturbing. It is often used to avoid being too direct or blunt about sensitive or taboo topics. For example, "passed away" instead of "died," "let go" instead of "fired," or "vertically challenged" instead of "short." Euphemism can be found in various forms of writing, such as literature, politics, and everyday conversation.