I have been to the dentist for a second xray and this one showed a dark hazy round shadow around the apex of the tooth. (upper canine)

My options are to extract or do root canal treatment. I have read that root canal involves the use of bleach and this is necessary to disinfect the canal. This is a major deterrent for me and has forced me to consider extraction as the only option. But this has bad consequences too.

Is the extraction of this tooth easily done even though it is the longest tooth in the mouth?

If I leave the space, will my teeth shift and cause biting problems?

is there no alternative to the strong bleach they use during root canal?