Idea for gap between the tub and floor tile

by Lau6237061
My bathroom tile is ceramic, and was clearly installed poorly, there is about a 3/4 to 1" gap between the tub and the floor tile, it currently has caulk to fill the gap but that always get dirty and separates over time. I'm just looking for options, (Please dont suggest to retile, as that is not an option for now)

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