I grew up pretty conservative too. All the right information (capitalism bad, elections and peaceful protest don't change shit, politicians are liars, wars are made by the rich to get richer) was rolling around in my head in my late teens but so was all the reactionary bullshit and anti communist lies. They just took a long time to shake out into the conflicting sides of an argument.
The tipping point for me was the Ukraine war. It was one lie too many. I've got a memory that doesn't let go when it comes to media. So I never forgot that ukraine had a nazi coup. The liberal "democracies" openly supporting nazis was too much.
All the nazi symbols that the msm didn't know it was sposed to be blurring were like pins stabbing my eyes. Suddenly I could see that "both parties bad" wasn't even going far enough. The entire system was built by rich white supremacists to maintain power. There is no middle ground there are fascists and there are anti fascists and all the western governments are fascists.
After a short while I realized the only anti-fascists who have a plan to eradicate fascism and make sure it can never return are communists.