Ardens, I agree with trying to create your own password system - at least for your most commonly used things.
My concept is a bit like this (don't wanna give it all away):
I keep at least 3 different emails and they have their own browser (Brave, Goanna engine (Palemooon or Basilisk), and Firefox, for example - ones with different engines) and I also use those browsers' profile options for certain categories. Then, just so that i remember what I am using, I try to color-coordinate the browser's theme and email theme. Ex: gold is for money/financial stuff and I use protonmail with an odd email name used for nothing else and I use a passphrase in a language I speak a tiny bit of. I assume that most company wesites have a minimum of 3 letters and I can either use the first 3 letters or the last 3 letters as part of my passphrase. If for my financial stuff, I can either add or multiple the numbers....if letter E is 5 and E is one of the letters, for financial, I can multiple by whatever number i choose but I stay consistent...so let's say it is 3. Letter E is 5, so 5 x 3 = 15. If another letter in the company name is C and that corresponds to 3, then 3 x 3 = 9. And then there is a 3rd letter L which corresponds to 12, so 12 x 3 + 36. So, somewhere within my passphrase, instead of the ECL that is the company website's name, I use 15936. I also must use a combo of caps and lowercase letters, at least one symbol. usually over 14 total characters and no more than 18 - because some websites set these rules. I can inject the number sequence anywhere I choose - maybe after the 3rd letter of my passphrase just so that I recall that number 3 as being for financial stuff.
Example if my passphrase (in a different language) is mykiTTycatisythecutestintheworld =/becomes myk15936iTTycatisthecutestintheworld. Also, for common words such as is or the, swap that word out of symbols - in this example, the word "is" will become %$...so,
myk15936iTTycat%$thecutestintheworld
I get tripped up for work passwords, though, because some employers force you to update your PW every 90 days. I usually just add a character and keep the rest the same...but, I can still get a bit forgetful.