Logic Users need to edit each sound to be in perfect sync to the video

What I am doing

1.trying to add sound in real time to a video clip
Trying to get as close as I can

But I am sure I will need to edit each sound to be in perfect sync to the video

What are some techniques lessons tutorials ideas on how to do that to get that in perfect sync without unlocking the video and movie by that around in logic ?

Not sure if this will help, but there is a tutorial about working with picture by MrSdjones3 on Youtube.

https://www.youtube.com/watch?v=saxaOOv3J3g&list=PLZGKUMn0YwD-MoKT4n2AsIDWsCB0LXMGb&index=128&t=0s