Potatoes do freeze well but only if you cut the potatoes up first and then blanch them.
Freezing whole potatoes can be done but they will become soggy and not be as good.
Potatoes can be frozen raw but they should be cut up and blanched first as they can become soggy when frozen whole.
You can freeze raw potatoes to make them last longer.
When you freeze raw potatoes they will last for up to a year which is longer than they would last if left out in the pantry or on the counter.
You can freeze raw potatoes whole or you can cut the raw potatoes up into slices or into fries and then freeze them that way.
If you freeze them whole then they can become mushy and water logged which does not make very good fries but you can then cook the raw potatoes and then mash them up and make mashed potatoes which is what I do sometimes when I find raw potatoes on sale.
I place the entire bag of the potatoes into the freezer and then throw the potatoes directly into a boiling pot of water and then cook them until they are ready to be mashed up.
If I want to keep the frozen potatoes to make fries I will cut them up into fries and then blanch the potatoes and then place them in Ziploc bags and freeze them.
Blanching the potato fries prevents them from becoming soggy and so they stay good as fries.