Free licenses always restrict use. You cannot use them without sharing your changes.
You managed to compress several errors in just two sentences. Free licenses aim to unrestricted use, that's their very reason to be. Search for "software freedoms". You're not forced to share changes, except in very few licences like MPL. Some (not all) free licenses ask you to distribute source for derivative works. Most ask you neither.
You managed to compress several errors in just two sentences. Free licenses aim to unrestricted use, that's their very reason to be. Search for "software freedoms". You're not forced to share changes, except in very few licences like MPL. Some (not all) free licenses ask you to distribute source for derivative works. Most ask you neither.