Is laser nerve treatment or pulp capping for toothache better alternative than having a root canal? I do not want a root canal! It is a front tooth

Root canal is better. Than pulp capping. Pulp capping will only work if there is a pin point exposure of the nerve and it is still healthy. Tooth ache means the nerve is no longer healthy and root canal treatment (with or without use of a laser) is indicated. See a root canal specialist - endodontist.
Front tooth. If the nerve is infected, your only alternatives are a root canal or an extraction. Laser treatment is done in conjunction with root canal treatment.
No. Your fear and bias against root canals is unfounded! anything other than a root canal in this situation is witchcraft! see an endontist asap.