My LG LRFC25750WW refrigerator collects water in the bottom of the freezer (bottom freezer) that freezes, then leaks over the floor.

This is a known problem. There is a drain that allows condensation to escape to the bottom of the unit where it will evaporate. Ice accumulates in the drain causing it to clog and the moisture drains to the freezer bottom.
The solution is to empty the unit and defrost it for 24-36 hours. The ice in the drain will melt allowing the unit to work as it was designed. To avoid future problems make sure the doors are always kept shut. Ours clogged after our son left the refrigerator door open on day.

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