For some reason, my Minecraft launcher doesn't have all the versions. For example, it skips from 1.15.2 to 1.16.2 or from 1.9 to 1.12.2. Also, I don't have any of the versions lower than 1.9.

Note: I know that you go to "Installations" and click "New" to play on another version of Minecraft but for some reason when choosing the versions, I only have some of the versions. Attached is the picture of all the versions I have.