Elie Bursztein offers “10 easy steps for staying online.” His “most important rule for being safe online is to choose a different hard-to-guess password for each website you use”.
For that, unless you choose to keep your own list of passwords, Burzstein recommends 1password. “The most important rule for being safe online is to choose a different hard-to-guess password for each website you use. Long, random passwords prevent brute-force attacks. Using a different password for each account prevents having all your accounts compromised at once when a data breach occurs because of password reuse. However, because no one can invent and remember a gazillion random passwords, the best way to have a strong unique password for each site is to use a password manager. My personal choice is 1password, but there are other good alternatives.”
That notebook of passwords you have, and seek to maintain, can become pretty jumbled over time.