After the pandemic in my area there is a shortage of mikrotik equipment, will the shortage continue for the Latam area? why so many shortages?

Production has resumed for nearly all devices, so soon your local distributors will be getting plenty of stock again. For example LHG LTE models are arriving in around 4 weeks I think. Better ask your local distributors directly, they know when their orders are arriving. And make sure they order the models you need.