There's no accounting for the psychological effects of a crash. They can be very disproportionate to the circumstances, possibly because of a "what might have happened" awareness, or they may be based on what were in fact serious consequences. IME- they self resolve if you ride but it can take time for you to reach the pre-accident level of comfort and confidence, or at least close enough.

Decades ago I came onto a steel deck bridge on a rainy day. The road had a rise to the bridge deck so I couldn't see it until I was on it at well over 20mph. Sure enough I crashed. Overall it wasn't bad, the decks highest rails were parallel to the road, so instead of getting grated, I slid along with no injury. When I walked back to my bike it was lying between the front wheels of a tractor trailer, who'd driver managed not to touch it.

All was OK, but after folks helped me to the side of the road, I had a delayed black out from the emotional shock. For years I had a deep fear of riding on steel decks. I'd do it but at about 5mph, and only after coming to a full stop before starting again. It took about 5 years for me to reach a state of proportional distrust of steel decks, especially when wet, and now almost 50 years later, that bridge and the crash are the most vivid memory I have of that 3 week trip.