For my major project, there were specific sounds that I needed and I wasn't able to find those that I like. The skate scooter is an example of it. Also, the footsteps that I previously found was not in sync with my animation. Hence, I have collaborated with Martin Langenbach (www.geraeuschemacher.de), an establish Foley Artist based in Germany to make the sound effects I need. Here's the recording of the sounds.