Not all LMIA are fake. If the job is genuine the LMIA have a high likelihood that it is genuine.
Maybe so but arriving in Canada with a bank balance almost zero and the need to quarantine for 14 days maybe not the greatest idea given even on a temp work permit the setup costs for accommodation and so on. Of course everyone has a different definition of near zero but as we all know Canada not exactly cheap when compared to other parts of the world so hopefully the OP has done their research or as a minimum has a support network in Canada , friends, relatives and so on.
Of course standard advice free flights, accommodation and even food with a job offer should always be approached with caution but OP hasnt mentioned that so anything else here are assumptions.