Gunja I think you're confusing the F4 with the F4U Corsair. The initial design of the F4 had a flat wing and as a result when used with the huge 4 bladed prop had a very ling and spindly landing gear--as a tail dragger this was not practical for carrier landings. The F4U was an airframe redesign where the wing dihedral was reversed (gull wing) that provided both the ability to fold the wings (important on a carrier based airplane) and shorten the landing gear, readjust the the rebound rate (to reduce bounce) and adjust the airfoil on the port wing (to prevent torque stall). However, to provide greater range a new duel tank was installed behind the engine which moved the pilot further back on the airframe. Initially the Navy (1942) felt that the relocation of the pilot on the airframe would interfere with carrier landings and since they already had the F6U Hellcat they relegated the Corsair to the Marines.
However; the US Marine and Royal Navy pilots proved the air superiority of the F4U Corsair over the Hellcat and proved thet the Corsair was capable of Carrier landings. So by 1944 the F4U corsair became the main US Carrier fighter.
There it remained the main Carrier fighter through the balance of WWII and up to and including Korean war until it was replaced by jets. The last of the F4U Corsairs was built for the US Navy in 1953. They remained operational in some capacity until 1969 because of its ability to provide close ground support to infantry because of its bomb load and the ability to fly slow and low.
Voight F4U Corsair
BTW My dad was a gator Navy LCO for 26 years. He loved the sound of the Corsair and the P-51 Mustang at 50 feet, he said it made him feel safe.