YT Video clips compilation research

I run the yt channel similar to '3 minutes of aviation' just in public transport niche(mass transportation - metro, bus, trains, planes)

I need help with content/videos shortlisting for the 2 times a week compilation videos published( wednesday and sundays)

Each video is 3-5 mins and contains 3-5 clips

its an ongoing task

Budget to be confirmed(per video or per month * qty) as we speak