Bonanza 35 Pilot reported landing gear collapse during landing rollout.

Narrative

VFR cross country solo pleasure flight following annual inspection. Following annual inspection; flights were performed by mechanic. I departed ZZZ1 @ around XA:00 pm - landing ZZZ2 for fuel - filled tanks - Departed ZZZ2 around XB:00 pm to ZZZ VFR winds favoring Runway XX. While on approach to landing ZZZ Performed landing checklist; gear indicator lights error; two of three green lights and one yellow transit light illuminated; retracted landing gear normally. Re-extended gear; gear indicator lights error; 2 of 3 green lights and one yellow transit light illuminated. Light bulb test switch activated; and all landing lights and transit light were illuminated. Confirming the light bulbs did not fail and that the landing gear was not fully extended and locked. I circled airport; spoke to ground personnel. Low approach performed. Ground personnel reported gear down; I climbed to higher altitude; slowed down; activated auto pilot. Circled airport; followed aircraft POH emergency gear extension instructions. I pulled landing gear circuit breaker; manually turned emergency gear extension handle counterclockwise until it hit the stops and would no longer turn. Obtained three of three green lights illuminated and one transit light extinguished indicating landing gear fully extended and locked. An aircraft landed Runway XX. I notified airport personnel of above and intentions to land. The airport manager; a flight instructor; and a student were standing by to aid and observed the landing. Standard landing procedure followed; and normal touchdown obtained. I reduced engine power; slowed down and maintained level attitude. While rolling out; the left gear collapsed. With full right yoke deflection; I was unable to keep the left wing up. I was no longer able to fully control the aircraft. The aircraft skidded onto the grass verge on the left of the Runway. I departed the Runway to the left; entered the downward sloping grass median; the nose wheel hit a ground hole; broke off the aircraft and the aircraft spun around coming to a stop. I turned off all switches; shut off fuel valves and exited the aircraft. Those observing the landing responded immediately to provide aid. They reported to me that everything appeared normal until the left gear failed and collapsed; resulting with left wing dropping onto ground. Airport manager recommended '[Company] Towing' to move the aircraft to a safe area on the ramp. Aircraft was secured. The aircraft was lifted with a cradle onto an open bed truck where it was transported to the northeast ramp; placed on jacks; and temporarily secured with tie down straps. Airplane cannot be rolled on its one wheel. Additional work required before the aircraft can be moved out of the weather into a hanger. During transport additional damage to aircraft including not limited to cradle lifting straps damaging forward inboard portion of right and left wings. Reviewed incident; inspection by mechanic; and above and I was advised that NTSB report not required.