A disk is shown as a bar, each partition is 1 segment of the bar, if your Windows partition is located before your Linux one you would have to move the partition to the left of the bar after reducing the Windows one, because the partitions can only be extended to the right, so it will need a full partition moving to the left to get all of the newly empty space available, and then after moving you just expand the Fedora one.
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I’m using StartAllBack (paid software), it replace the start menu with a Windows 7 like one, and brings back the pre Windows 11 taskbar, it has no ads and good customization. There’s also Open Shell that is free and Start11 that’s also paid.