If you wanted to use the most secure tools available, you’d have to sacrifice a lot of usability. And, even then, nothing is ever fully secure. There’s high security, but never full security. That’s why threat models are important.
A threat model is a list of the most probable threats to your security and privacy endeavors. Since it’s impossible to protect yourself against every attack(er), you should focus on the most probable threats. In computer security, a threat is an event that could undermine your efforts to stay private and secure.
You may have already seen this, but if not
https://www.privacyguides.org/en/basics/threat-modeling/
You could break it down further