Best to conclude, “We don’t really know” and honestly that’s ok!!! You’re allowed to believe whatever you want now. Don’t get stuck trying to find “the truth” or else you’ll just be left at someone’s mercy and basically back at square one.
It’s difficult at first to accept but we will only know if there is life beyond this life when we die so better to live the best you can and be a good person. At least your conscience will be clear before the curtain falls.