Hello, I tought that if we download the torrent on public trackers and help seed in private trackers it would help to keep a good ratio,but the private trackers use a compressed rar parts.
I tried to compress and separate them into the same size, but they are not the same.

Thank you, I hope that my idea works and help a lot of users keeping a good ratio.

Well that's cross seeding what you're doing, it'll work if you have the same exact data.
But if you're trying from another one and make it look like it, that'll never happen,
I'm no expert, but you can use cross seeding between trackers, in case you have the same data
hope that helps