i got this problem too the first time i tried, reset your run from the start and be sure to do not move one extra tile down before the pikachu reset.
During the intro and for every textbox until you set textspeed to fast
It's a god nido, if you want to make sure yourself you can download pokemon red helper (link in ressources)
Seems good, just be sure your lvl 9 stats are 29/18/15/16/15 and you're ready to go.
Don't you forget the A press at 0:22 ?
Otherwise a beginner friendly free set-up for record is OBS + Nohboard
The best way for us to help you is to see a video of you doing the manip with an imput displayer.
None specific, just type "pokemon red rom" on google and take the one you want, you just need a gbc_bios.
Have you a video of your run ?
This is a new route for NSC with a manipulate Charmender, there is a short summary of it :
https://docs.google.com/document/d/1SQfcxBLFoh5XFtHmbg1z7He3CIHipWzytzNkAYHyYfs/edit?usp=sharing
On the second one, you just took too long to clear the "Wild Nidoran appeared" textbox.
There is a guide from Krazyd4n : http://www.speedrun.com/pkmnredblue/guide/xiojg