Merge Downloaded Clips to MP4

I have between four and six video clips that I’ve downloaded from the internet and I need them stitched together into one smooth MP4 file. I’ll give you the exact sequence in which each clip should appear; just follow that order, trim any dead space at the joins so the transitions feel natural, and keep the original resolution wherever possible.

Please handle basic level-matching so the audio is consistent from clip to clip and make sure the final render plays correctly on standard players. Deliver the finished video as a single MP4 ready for immediate use, plus the project file (Premiere Pro, DaVinci Resolve, or similar) in case I need future tweaks.