I have a simple method to prevent to be cracked for %100.

I choose a word, for example if it's Hacker News, then i choose hacker and then add random number to it while they are complex chrachters.

Just look on your keyboard, there are numbers that matches chr, like 1 -> & and 2 -> é

so i write é(hackerénews while i memorize 25hacker2news

i think in such way it's 98% impossible to crack it