@dankboi
First you will have to renounce your PR, wait for the decision, and only after that can you apply for PR under the express entry again. This is because until your renounce your PR status, your status will be reflected as a PR, and thus your PR application cannot be processed.
Also, when you apply for PR, you will have to demonstrate why you renounced your PR, and why you are filing a new PR application again. One of the criteria for the PR application is that the applicant is willing to move and settle in Canada. Given that you did not meet it before, what circumstances changed that you should be granted the PR status again. This will have to be clearly justified in a LoE and based on the case you may even have to draft a LoE, which is more like a H&C.
Before you initiate this process, if you were unable to meet the physical residency requirements, you can also consider filing for a residency obligation appeal (subsection 63(4) of the IRPA) and restore your PR status. See
https://irb.gc.ca/en/filing-immigration-appeal/Pages/immapp-d1.aspx
All this strategy will depend on your individual circumstances, and only after evaluating your documents, can anyone give you legal advice. The forum can only point you to resources and is not a substitute to professional legal advise from a lawyer (not consultant).
While going through this thread I came across people giving advise on how to go about it and advising not to hire a professional.
Immigration is law, and not just filing a bunch of forms. Making rash decision and not knowing the consequences can land you in troubled waters. In most cases when you are applying for immigration, you can file your own application if you have time and resources to read and understand the basis of the forms.
However, immigration law involves having an understanding or the Constitution, IRPA, IRPR, procedures of the IRB, Administrative law, Procedures of the Federal Court, Evidence law, et al.
Given the complexity of your case, instead of tacking it yourself, you will be much better off engaging an immigration lawyer. If you get stuck somewhere you you not only jeopardise your case, but will have to pay a lot more later.
Google can only provide you certain information, and is not a substitute for a professional who graduated from law school.
The choice is yours.