Generally you must have either family or close friends in Canada for private sponsorship to be possible. There are organizations classified as Sponsorship Agreement Holders (SAH) that are authorized to act as sposnors. However based on experiences here, it appears they are already fully committed and not accepting further sponsorships. If you want to try reaching out to a SAH, the list can be found here:
https://www.canada.ca/en/immigratio...p-program/agreement-holders/holders-list.html
The process generally takes 2-3 years once the application is submitted.