Indeed but you are in charge of what you believe. I take a view nothing is true until either it’s unimportant or I find multiple independent repeatable evidence.
The analogy I use is someone walks up to me and announces they have a cat.
As their cat ownership is not important to me, I’d take their statement as sufficient evidence.
If they said they had 20 cats, I’d be more skeptical and ask to see a photo.
If they said they had a cat which sang Yanki Doodle Frankie while ice skating, I’d ask to go see their cat.
Extraordinary claims require extraordinary evidence.
Then take one of the biggest lies. 1.9B people think Allah is real and Mohammed is the greatest prophet, with Jesus as a lesser prophet. Meanwhile 2.3B people think Jesus was real and the son of God. They can’t be both correct, so either 1.9B or 2.3B people are wrong. That proves many people can be made to think a false thing is true. Therefore probably all such claims are false.
The existence of religion proves the gullibility of mankind. The least wrong person would not accept any claims, they’d have fewer opinions but be less wrong.
WhatsApp and other means to spread false information is just a further demonstration on human gullibility.