How do you decide who to trust?

honstly, I'm naive and it bites me in the ass every time I trust people fast. but I wish people don't accuse me of random shit and be suspicious of me without any kind of evidence or reason like what did I do to you to find me suspicious really? I'm tired of people doing this shit to me both on the internet and in real life just because I'm awkward and quiet. sorry I had to vent about it ignore the last part