Glass in Minecraft?

Where can you find glass in Minecraft?

You just have to melt sand in an oven.

Melt the sand in the oven

You can only find glass in villages, but you can't mine it without an enchanted pickaxe with cautious enchantment.

Much easier: sand in oven and roast. Tada glass. 1 sand = 1 glass.

If so complicated, then you should also mention that a librarian sells glass.

And that in the forest property also glass is to be found.