Ideally, sure use a password generator - but I wouldn’t worry about the security of a password generator like the one I linked.
- There’s no linking of the password you generated to whichever account you are creating.
- There’s no guarantee from the web operator’s perspective that you are actually using the generated passwords for anything at all.
Again, use bitwarden’s generator - or equivalent - for passphrases, but in the absence of that correcthorsebatterystaple.com is good enough for a non-shared password.
A digital solder gun with a properly sized tip and a magnifying glass with helping hands (flexible clips) helps immensely. I had to hand solder a surface mount resistor that looked about the size of the tip of a pencil. It wasn’t pretty but I got it done.