Hashing only works if the website stores their passwords correctly. If a single website you use doesn’t hash passwords correctly, and gets their database leaked, then your passwords will all be leaked. Changing a few characters per site may help a bit, but it shouldn’t be relied on.
Also, if you’re worried about the host shutting down, you should try bitwarden. It’s completely open source, and you can self host it if you want.
Changing even a single letter will completely scramble your password with hash, so for all intents and purpose it is equivalent to a unique password.
Though I do admit it can get a bit tedious, I’ll definitly look into self-hosting, thanks for the recommendation
Password are leaked all the time. You are trusting the website with your password, but won’t trust a password manager.
There are self hosted versions of password managers that solve the issues you described. Just read the comments here, some great recommendations.
Password managers holds the key to all my other accounts, where as a random poorly secured site do not. Of course I will have less trust in a password host, a compromised host means I also lose my banking and work account, but if a hacker got my free-manga.net password, well they can enjoy my shitty isekai collection for all I care.
The biggest security issue was always shared password leads to poorly secured site compromising highly secured sites, and thats why unique passwords are important. You might be thinking the change-one-letter password is similar to sharing password, but that is just not how hash works.