Dropping wave

Hey!,
If I'm posting this in the wrong forum I apologize.
Well the thing is currently I'm riding a chili step-down 2 6'2, 20'1/2, 2'5/8, I'm a beginner-intermediate surfer (3 years surfing), I'm 18, 5'8 and weight 67kg, The wave height range where I surf is between 5ft and 7ft. Before buying it (7 months ago) I was riding a Lost SD II 6'1 and I remembered not having so much trouble with heavier drops... Now I wipe out very often.
Last year I had a kneecap disloacation and broken ligaments which left me out for about 8 months
This because genetically I have ligaments hyperlaxity, in simple terms, more risk of having dislocations.
I would like to have some opinions on whether is that I'm having like a psychological fear and how to overcome it (which I think it is) or maybe is a surfboard type selection issue.
I really appreciate any help.
If I'm posting this in the wrong forum I apologize.
Well the thing is currently I'm riding a chili step-down 2 6'2, 20'1/2, 2'5/8, I'm a beginner-intermediate surfer (3 years surfing), I'm 18, 5'8 and weight 67kg, The wave height range where I surf is between 5ft and 7ft. Before buying it (7 months ago) I was riding a Lost SD II 6'1 and I remembered not having so much trouble with heavier drops... Now I wipe out very often.
Last year I had a kneecap disloacation and broken ligaments which left me out for about 8 months

I would like to have some opinions on whether is that I'm having like a psychological fear and how to overcome it (which I think it is) or maybe is a surfboard type selection issue.
I really appreciate any help.