我拒绝了所有

This translates to 'I Refuse Them All'. There can be multiple interpretations behind such names. Perhaps it's a show of independence, rejecting conformity, refusing the conventions and pressures around them. Or the user may have been through a series of experiences where 'rejection' plays a part, like saying 'no' to invitations, relationships, offers... It could represent a desire to keep oneself away from potential distractions.