Una pregunta:

If I want to say in Spanish 'I don't feel it', but I do not want to say 'I am sorry' 'lo siento'. Is there a difference how can you say I don't feel it

I am sorry = lo siento (it is better to say: 'perdon' o 'lo lamento' )

I don't feel it  = no lo siento (if you don't feel that ...feeling)