Question: Do we get a different soul for each life?
Answer: No, usually, in most cases, one life is not enough for a soul to learn something. It needs multiple lives. Unless that one life had a really special meaning and the soul came to Earth for that specific reason. The number of lives a soul experiences varies with its mission, typically ranging from 5 to 1,000. While 1,000 is somewhat rare, it is not exceedingly so. It depends greatly on the soul, its mission, origin, and similar factors.

However, it is very rare for a soul to come to experience just one life. It must have a very specific mission. For beings we know as "reptilians," this is possible. They are usually on Earth with a specific idea of maintaining balance. But even for them, recycling is more common, as it is easier to guide an already experienced soul along a certain path than a completely new soul/personality.