'Leaflet - GeoTIFF doesn't fit on raster tiles

I'm dealing with a problem. I have a map in Leaflet where I load raster tiles in PNG format created from GeoTIFF using gdal2tiles.py. At first glance, everything looks fine, but as soon as I overlay the tiles with GeoTIFF (the same one the tiles were created from), it looks a bit offset when zoomed in. I would need it to fit exactly. Does anyone know what this could be please?

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I try change coordinates system, and transform GeoTIFF to pixel as point.



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