Must Catholics believe in Christ's historicity?

Is there some philosophical doctrine in Catholicism which does not require to believe in the historicity of Christ, like in Buddhism (you can "believe"/practice Buddhism, but don't believe in Buddha and his historicity)? I ask it because I can believe in symbol or philosophical concepts but not in those Bible stories, they sound absolutely immodern, naive and untrue. I know about Pierre Teilhard de Chardin, but I don't know what is the current status of his doctrine in Holy See. Also, it's super difficult to me to believe in a soul and anthropomorphic God... And believe in soul makes close death very difficult, you know, hope is a pain, sleep is a rest. Maybe there are some more symbolic or philosophical or mystic concepts in Catholicism for peoples like me? Like there are such ones in Islam and Buddhism?