Hi oxygenre, Thank you for contributing to OpenStreetMap. I have found that you deleted many buildings which are visible from Satellite Imagery and re-added a few, rather than deleting it, you can use the same polygon and modify it correctly.
Please remember to square the building (shortcut is "Q", if the buildings a adjoint, select all the adjoint buildings to square it) to keep a good shape and draw the building individually at your best.

Learn more about the OpenStreetMap editing here (https://learnosm.org/en/beginner/)
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            Published using OSMCha: https://osmcha.org/changesets/147128425
            