I (27m) want to sue x(32m) for defamation

I will be as brief and as honest as I can collectively whilst summarizing this in point form as best as I can I will begin with my recent history . For 15 years I manifested moving to a different province within Canada. - just recently marks one year of me finally moving away as planned -I am a red seal electrician and got sponsored to move to my dream province to take on the role of a foreman for one of the biggest companies in said province. -I left everything behind to do so and moved alone with not a soul to connect with even mutually. - the toxicity of my home town plays a big part of my move. - since moving I have gained quite a considerable amount of recognition and credibility for my performance and work ethic within my industry -I am working towards opening my own company where I am currently situated. -throughout this year I have developed a strong political viewpoint to which I firmly stand upon. - I occasionally share entirely legal posts regarding these standpoints on my facebook. These posts are conservative and as expected wouldn’t sit well with someone of liberal views but none the less not racist or biased and completely legal and statistically backed up. -5 days ago I shared a post referring to the PM as a Tuscan raider dictator. - being a Star Wars nerd my reasons don’t correlate to the common connection of Tuscan raiders being referred to as “sand people” more so in a deeper lore related context to which I would compare them to a far left activist group similar to that of antifa. -X whom I’m building this case against was an old mutual friend of a large group of friends from the town I moved from. -x saw this post referring to my concern of an immigration problem and me saying that real Canadians are suffering -x proceeds to say “my family imigrated from the UK am I a real Canadian?” -me having the dark sense of humor that I have said “yeah, you’re white” - x then proceeds to send me paragraphs of words solely based on a liberal mindset to which I have no care to partake in. -i get frustrated with the constant buzzing of chat notifications and paragraphs longer than I have the time to read. -after many irrelevant words and me trying to avoid the situation I eventually say I’m done with this and block x - less than 2 minutes later x messages me on Facebook saying “I will post your racist BS all over and see how that goes. Youl get fired from your job like you have multiple times in the past (this is false, never been fired) due to your own dumb A** self. When you fall apart and lose your job this time remember it’s your fault. No one else’s. A guy like you , inevitable you will F it up “. -I replied “oh nooooo” , “you’re a joke dude” - x proceeds to brag about all his accomplishments whilst slandering my name by accusing me of having a coke problem (to which I most certainly do not) and calling me all sorts of vulgar names. -I replied “sounds like you need a hug “ - x then continues to aggressively insult me and finalizes with making fun of me for getting assaulted in the past and drugged when out of town working for a company that resulted in me quitting due to the circumstances. -after all this I sent my first and only big response in which I called him a goof and crazy and mentioned that I have one less reeeeetarrrrrDDdd to deal with in my life. -I finalized this message with “this is the last message you will receive from me “ and blocked him. After not having the ability to respond X then screenshots the original 2 things I mentioned and emailed my company labeling me as a racist without proper context and I now have to meet with HR and my reputation with the company has been impacted. -I’m far too valuable to be fired over this however the fact this took place makes me want to pursue legal action -I’ve worked my butt off for 11 years to get where I am and violence isn’t the answer. I want him to have to learn this lesson financially.

Any thoughts help. Thanks for taking the time to read this.