MSG should be available in many well-stocked grocery stores. Look for it with other seasonings, perhaps under the brand names Ac'cent or Anji-No-Moto. I did have difficulty finding it when I bought some a few months ago due to supply chain issues. Note that Bulk Barn in Canada typically stocks it (it was sold out when I tried). I ended up finding it at H-Mart, and bought the last bag they had in stock. Note that if you can't find it locally, it's also widely available online.