Can you do volunteer work on Shabbat?

I help in emotional support groups, people with depression, etc. And I would like to know if, in your opinion, I could do it on Shabbat?

Many people need help and there are serious cases of people who will attempt suicide and I think it is very necessary for me to help even on Shabbat.

I think we have to consider, is it better to follow Shabbat, or let someone commit suicide that I could touch the person’s heart with the word of God and stop them?

I would like opinions