Hello! Just received my new frame. Anyone has a video or link on how to assemble a bicycle? Step by step? This would be my very first and would like to do it myself instead of going to a shop. TY

It depends what groupset / components you're using.
There are absolutely tons of build guides on YouTube, so choose one which matches the build list most accurately.

To start, you will need some basic tools but also some specialized ones. I will send you a link.
1 . https://www.aliexpress.com/item/1005009156735796.html?spm=a2g0o.order_list.order_list_main.94.3d781802FePnI6
Bike Steerer Tube Cutter

2. https://www.aliexpress.com/item/1005008521732366.html?spm=a2g0o.order_list.order_list_main.112.3d781802FePnI6
Bottom Bracket Install Remover Tool

3.https://www.aliexpress.com/item/1005005854072305.html?
cable routing tool

4.https://www.aliexpress.com/item/1005009464520828.html?
Bike Oil Needle Driver Hydraulic Hose

5.https://www.aliexpress.com/item/1005008720472368.html?
Disc Brake Oil Bleed Kit

6. https://www.aliexpress.com/item/1005010247529453.html?

7.https://www.aliexpress.com/item/1005009794018351.html?
cassete tool

8.alen tool

9. pump

10 .grasse

Rather than find one video for bike assembly, you may be better off tackling each part in turn. There are so many variations on parts that I wouldn't think a 'universal' video would be much help. If, say for example, you're fitting Shimano 105 chainring - search for video(s) on just that, then move on to the next bit. I learned everything I know about modern bikes this way.

Get the foam rubber cable housing tubing so your hydraulic lines and shift cable housings aren't rattling around inside your frame.