If I gave up on marriage, relationships and just trusting people in general, what else should I do with my life?

I’m serious.
If I never want to be married again and I don’t want a relationship because I don’t trust people anymore then what else should I do with my life?
I am a father already, I love my son and am thankful for him.
I have a basic job ( I work to live, not live to work.)
Is charity the answer?
Will I feel fulfilled if I help others the rest of my life or will I still feel empty inside?
Should I just count my blessings, sit back have a Corona and give up on everything, don’t think anymore and just let life happen to me?
Should I be thankful I don’t have real problems, just a broken heart and start online dating and try the whole relationship, marriage thing all over again?
Is that insanity?
What else should I try to find fulfilment, my life is open…...