The short answer to this question is that you will need to do a lot more research to understand the best option for you given your circumstances. An open work permit is not one of those options at this time.
If you want to be able to work in Canada, then you would need to first secure a job offer from an employer in Canada and that employer would need to most likely go through the LMIA process which gives the employer authorization to hire you. Once the LMIA is approved, you could then apply for a closed work permit tied to that specific employer. The LMIA process is long and expensive. It's generally very difficult to find employers who are willing to go through this process. You haven't indicated what your occupation is so difficult to comment on the feasibility of getting a work permit.
Another option would be to come to Canada on a study permit to complete a full time program at a university or college. This is a very expensive option since you have to pay international student fees. You would want to take a program that is at least 2 years long to give yourself a decent chance at PR and to qualify for a 3 year open work permit after you finish your studies.
Yet another option is to apply for PR immediately as you've said in your post. How feasible this will be depends on many many factors including your age, level of education, work experience, occupation, funds available to setting yourself in Canada, etc. One very popular immigraiton program is Express Entry. This is a points based system and those with the most points are selected for PR. I would recommend you try calculating your points to see where you end up. You want to score at least 470+ to have a decent chance of being seleteced.
https://www.canada.ca/en/immigratio...ces/immigrate-canada/express-entry/works.html