I’m an ex-Catholic as well. My advise is that you should pick your fights carefully as atheism in general has no response to our mortality that doesn’t appear to be anything other than nihilism. Remember the saying “you may win the battle but lose the war” and that battle & war involves winning the the hearts and minds of your fellow humans.
As a fellow ex-Catholic you should keep separate debates about Jesus from debates against the Christian institutions that sprung up around him without his leadership or guidance. Basically call out Christianity for it’s many hypocrisies, such as not loving one’s neighbor, but be careful how you frame your debates against Jesus himself who is [unusually] absent [and late] from being here to defend himself [ ;) ]
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