As others have mentioned using a tumbler is an optional part of reloading, not a requirement. What is required, however, is some type of cleaning of the cases to be reloaded. My method for my first 80,000 pistol and rifle cases was to inspect and wipe down the exterior with a paper towel. It took six seconds a case. There were no scratched reloading dies, no missed case cracks or other horrors that people say happens if you do not tumble your cases. And if you do eventually get a tumbler remember that manual case inspection is still needed besides the tumbling. Good luck.
best wishes- oldandslow