I want to get help on terrian 3D. the meshes tree is tooooo small and it lay on the ground

Godot Version

My Godot version is the newest one v4.7.1

Question

I have downloaded some tree models in the Tito Shop. However, once I add them to meshes and want to use them, they just lie on the ground instead of standing up. The scene file stands up, by the way. The small picture at the bottom of the screen is lying down. I am confused about how to fix it. Also, it is too small to see it. I need to magnify it multiple times. Could you please to helpme fix it or just give me some advice. Your helping is really helpful me. Thank you very much!!!

This happened yesterday to me when I wanted to import a blockout model to godot after it was done in blender. There might be another thing which can maybe cause it, but for me, I fixed the problem by exporting the model by applying transformss in blender:
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