How am I going to do the job application
Apply for jobs on Canadian job sites like Indeed. You need a job offer and your employer needs to file for and pay $1k for a LMIA. The LMIA shows that no Canadian or PR could be hired, only you. Then with LMIA, you apply for a closed work permit. For the permit, you show that you are experienced to do the job. Depending on the job requirements, you may need IELTS for language and ECA for education. Most if not all jobs posted will say that you must be a citizen, PR or a person with work authorization to apply so no point in applying for those jobs.
You are in a licensed trade so may need Red Seal. Chances are low you will get a job offer with LMIA but you have to do research.