If refused on LMIA work permit, review the refusal letter to understand why it was refused and for further advisory by an immigration professional. You will have to get those issues rectified, errors, if any corrected, and all information related to the job with compliance to and adherence of the Canadian standards. Reapply or appeal as required and then also check whether you are eligible under other immigration programs like Express Entry or Provincial Nominee Programs. It will also mean knowing the latest immigation policies and having an employer ready to jump into action, hence assuring a smooth future application and a better chance of going through with it.
https://lmia.oasis-india.com/blogs/what-to-do-if-your-lmia-work-permit-refused/