Rendering and compositing

Creating basic scene Animation (rendering and compositing lecture):- sir first time jab apne render kiya to sequencer me Animation kharab ho gaya tha. Second time jab apne render kiya to frames sahi the but sir kya apne phir usse video sequencer me daal ke Animation ko render nahi kiye ?
Aur sir compositing ke baad last me jab final render kiye aap to lecture ki video blur ho gai aur aap last render kese complete kiye wo nahi dikha please sir atleast final render apne kese complete Kiya itna video me Clear/edit kar do kyu ki waha per video blur ho gai thi