Let me see if I understand this correctly of how Shamir backup works.
So you have to find several people you trust, and each one is supposed to hold a part of your backup key or seedphrase?
You don't have to find several people if you don't want to. Shamir lets you to create multiple backups, it's up to you how you'll use them. You can create 2, 3 or more backups and save them yourself in one, two, three places or wherever you want and however you want.
Well if you keep all the shares yourself that may be a better way to do it. Just distribute shares in a bunch of different places.
Then you could avoid having a single point of failure where you have the whole key in one place and it gets lost or forgotten, or stolen.
Shamir backup is not the best strategy, everything is individual. It might be best solution for you, worst solution for others but it's 100% guaranteed that if you keep your shares in the same place, it loses its whole meaning and value, i.e. now you have a single point of failure and there is no point in having 2 or more backups. The whole point of Shamir backup is to avoid that issue and save them in a way that in emergency case, for example, 2 out of 3 will be available.
It's up to you where and how you'll save them and it's better to not talk about that details but you can find many creative ideas.
