questions about flatline

hey i have been tryng to reboot and got to flatline i would like to know if in flatline is normal not feel anything in your cock, like until last year if i were in a exciting situation my cock would start to get a nice feeling of arousal and i wold get hard since i flatlined i dont feel this nice feeling anymore and  i have relapsed sometimes and even masturbation isnt that good anymore i dont feel much pleasure, could you guys answer me this if i dont masturbate i dont feel really anything downthere is it normal?

even when i get a morning wood i dont feel any sensation