Humm each part of this or that polymerase magically find each other and manage to assemble on the right spot in the right order and manage to form RNA because well among multiple different nucleotides thankfully the right one is taken and makes a part of the RNA

same for a shit ton of other mechanism in the body, like protein synthesis "omg guys just trust le science, see the ribosomes, they magically end up taking the right aminoacid and put them on the right place and the right order because they can read RNA, oh and of course they know where to come, start synthetize and stop because well.. its just like that its written on the RNA you dummy just trust me they all do that despite not being alive, just pure luck that the ribosomes find the RNA in the deep emptiness and vastness of the microscopic scale.

just trust me bro, things assemble themselves alone like that out of sheer luck because each parts find each other at the right spot right time and it happens millions of times a day bro trust me