How do I fix these pointy parts of my model?

When I use the Subdivision surface the pointy parts appear and I can’t get rid of them. I’ve tried as much as I know but no matter what i do they just won’t go away.

Not sure but it looks like you could have some double verts, try to select all and merge by distance.

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yes, you either have duplicated vertices, or you have unwelded vertices.

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Or… aliens flipped normals…

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