[Fizzlemizz]

Depending on what you want to do but adjusting the start number seems to defeat the purpose of the loop

either just:

local text = MyGameTooltipTextRight2:GetText()
if text then
    print(text)
end

or, if there might be something you want in position 1 or position x, check all TextRights:

local n = 1 --start from 1
while _G["MyGameTooltipTextRight"..n] do
   local text = _G["MyGameTooltipTextRight"..n]:GetText()
   if text then
       print(n, text)
   end
   n = n + 1
end