Why does my clutch still slip after replaciing clutch. on 1990 Toyota Corolla

I also replaced the clutch master cylinder and slave cylinder and it acts like the lines hold pressure not allowing the clutch to fully engagee the flywheel.

Asked by for the 1990 Toyota Corolla
i would verify that the adjustment is ok. if it is, you may have a bad pressure plate or worn out flywheel.