2006 g35 sedan automatic

So after a long process of fixing my cooling system... Turned out I did have a head gasket leak. Bubbles in coolant reservoir.. didn't have funds to get head gasket replaced, so did a lot of research and tried a pour in head gasket sealer. Before pouring in, I had the white coolant burning vapor coming from my exhaust pipe.. very quickly after running the sealer in the system, the air bubbles stopped! But the exhaust changed from coolant burning to the oil burning bluish stinky smoke! And a lot of it. So I checked the pcv valve and it was stuck, so I cleaned it and replaced the hose as well. Still smoking like crazy!! No coolant in oil either. What do I do now?!? Haven't even driven it since using the head gasket sealer bc the smoke!! I was going to pour in an engine cleaner then change the oil and filter but haven't done that yet. IDK much about cars I'm learning as I go. So I kinda need descriptive advice, and I can refer to YouTube a lot too lol just don't know where to go from here. Any advice is greatly appreciated!!