I need to merge 3 videos and insert some text slides

I have three, 5-minute videos which need to be merged together so they fade into each other and can be shared on a Zoom call as one video. The following edits need to be made to the videos before they are merged.

Video 1
0.00 (start) - Insert Slide 1 at the start.

Video 2
0.00 (start) - insert Slide 2 provided at the start before the logo slide
2.14 to 2.20 – remove 2 slides of text, so that just the slide “Arianna’s story” is left.
5.20 (at the end) – remove 2 slides of text.

Video 3
0.0 (start) - insert Slide 3 at the start, followed by the mini logo video removed from the end.
4.58 to 5.06 – remove the logo mini video.
End – insert Slide 4

I need this done within 48 hours please.