Confused on why a specific structure wont generate...

genuinely im tweaking rn doing this. to sum it up, theres a "well" structure within my larger dungeon structure. The well goes downwards, and has 4 exits. There is a possible 5 different exit routes, 6 if you include the "deadend" structure i included, incase its just unable do create the other ones, or has a chance to not generate a route. but instead without fail, every time, it generates 4 dead ends from each exit. idk what im doing wrong here 😭