Visa rejection

my wife visa is again rejected  & so can i response my wife in tourist visa .. within 3 month of validity can i go to commune & apply a for long stay D visa or not? its hard to wait like a 6 month of period & visa is also  rejected offen.. please give me  a suggestion about my question ..i think its better to live together & wait D visa in belgium than living different part of country. please if you have any idea about this case suggest me. Thank you

Did you appeal?

no i din't appeal? i hear appeal will be more complicated?