Since you put your question in a personal way, allowing me to answer how I do this as an individual, I can answer in the same way.
I had to choose: who has lied to me more? people? or God? etc. until I got to “I believe God long before I believe human beings”. Funny thing is, I got to that place by actually reading the Old Testament. Not in a study or at church or by a preacher. I just read it. I believed in God but was not sure about the Bible, which is why I read it. Well, and I wanted to know who God really was? What is His character?
It was in reading it that I began to understand that most of what people told me about God was not true according to the only book we can positively affirm as “The Word of God”. Once I took it that way, I saw where history backed up the Bible (more often than you would think!) and wherever history did not back it up, it usually had something to do with dates, not who won a battle.
So that is how I do it. I trust God, rather than man.
I suggest that you choose who you trust. But maybe, like me, you’ll have to read it for yourself before you can really decide that.