How do i change the axis on a object without changing the objects rotation?,How to change the axis on a object without moving the objects rotation?

first of all i am a beginner and i’m not good with unity so i will try to explain the best i can

so i have an object in unity i transferred from blender, but the axis things are off, i need the Z axis on the object to point forwards and not upwards but idk how to change it. i tried rotating the object in unity and blender but i can’t get it to work.,

i really need help, i spent almost an hour trying to fix this, i watched a bunch of videos and stuff but nothing is working, i need to move the z axis to go forwards instead of upwards