So far, only the Slovak's & Poles have done a deal to replace their MiG-29's, Slovakia with new build F-16, and Poland with new build F-35A. Slovakia's first F-16's are not due to be delivered for another 11-12 months so, understandable why they don't won't to let go of their MiG's in the current situation, and likewise, the first Polish F-35A isn't due for delivery until 2024, so again, no chance of them letting their MiG's go either.
The Bulgarian's haven't even signed for any replacement of theirs, and as of last year were being forced to look to keeping their Fulcrum's in service for another 5+ years at least, so again, no surprise it was a no from them.