@nishav
Carrier Fighter Groups are elite units with specialist aircraft trained specifically for operations from aircraft carriers. Those aircraft have structural improvements but also weaknesses of range and load based on the short runway and tolerances of operations at sea.
Therefore, its quite unrealistic to treat land-based fighter groups as even capable of operating from carriers, and sea based fighters should be a separate, more expensive, range-limited unit that is allowed to operate from carriers. Some famous units like black sheep and marines did operate from land bases, but having the cross-capability of doing so is a luxury and requires extensive training and support and extra well-prepared bases.
Besides the US and UK and the IJN, no nation had any practical idea how to actually operate an integrated, fully supported and non-seaplane aircraft unit from a ship and any attempt to do so without decades of preparation and planning would be a disaster.
To follow your logic,
carrier planes should be a separate unit
normal fighters cannot land on carriers
germany and italy can buy carriers but it costs them 15+ for sea stukas and they fight at -1/-1/-1
The usa and uk go on to win the technology and operational war as they did in real life after they didn’t sink the nonexistent western axis CVs