Couple thoughts

quote: They claim to value science and try to use it to disprove God’s existence, which can’t be done.

Yes atheists do value science. I don't know any atheists personally that use science to try to disprove the existence of a deity. Science may be used to answer some questions in a hypothetical manner as a potential rebuttal to a religious argument. For example, theists claim god has always existed, but then simultaneously ask how could something come from nothing? My question is "why believe in an always existing deity rather than an always existing universe?"

quote: They find some Biblical contradictions and then claim the most successful franchise in human history is a bunch of bull.

Depends on how one defines "successful" considering a lot of Christians don't take the bible literally for the most part whereas some do. I focus my arguments on biblical contraditions on the literalists not the metaphoricalists.