The phrase "We are in this together" has been tainted by COVID hysteria. Btw, the people who say this often live extremely privileged lives, to the extent that it's like Nacy Prelosi offering to share a few ice creams when other people have lost their jobs because someone decided they weren't clean enough for the impossible standards.
As for the others, this sounds too much like some generic secular mindset. If I were on a bridge, about to jump, having someone talk of the virtues of Togetherness, Humility, Affirmation, Resolution Veneration, Ease, and Secrecy would sound exactly liks so much bullshit. For ****'s sake, it sounds like you're trying to draft members to some political rally, not get people to find meaning inbtheir lives.
Here's what I do if someone tried to jump:
1. Ask them "Do you have a family that will mourn you? Would this upset them?" Often times this is the problem, as they either have a bad relationship with parents or believe that theie parents wouldn't mourn them. Convincing them otherwise might be difficult , but I could tell a story about how I ran off and my parents were super-concerned.
2. If this really seems to be problematic, as "What about your friends? Do you have any to talk to?" Ask them if that's the problem. Offer to be their friend, and try to stay in touch ( I've never been good at this part).
3. If the first two don't seem the problem, but aren't readily part of the solution, ask them what is the problem. It usually boils down to a breakup, loss of job (and loss of confidence for future work), or a massive change in living situation.
4. Very rarely, it's something philosophical, like, your religion failed to make a meaningful life and you can't understand how to make things work. You're devoted to your fauth but you're broke, homeless, and/or alone. Remind them here that religion doesn't guarantee success, and the point of things is finding meaning not in the things of this world, but in one's faith.
5. Very rarely, you have someone who has existential despair. Not sure there's much you can do there. But reminding them that people are there to hang out with even if their life is pointless might give them hope.
Even with that, I'm not sure that I've even successfully saved anyone. But it's a hell of a lot more real than any of that crap. If someone recited the list you gave to me, I'd say "See you in hell" and jump.
Human beings don't deal in stupid lofty ideals. They deal with the real world. And the real world is messy and involves the cares and concerns of our frustrations and personal problems. It deals in people.