I’ll go along with the other Retired one and Paul.
If you don’t have Personal Libraries yet, follow this link:
https://forum.kicad.info/t/kicad-7-beginners-guide-to-personal-symbol-and-footprint-libraries/38738/1
You should have a few in half an hour, one hour tops.
If you do have Personal Libraries, the easiest way to start is to modify an existing symbol.
The LTC6902 in the Kicad Timer Library is a good choice.
Find and highlight that symbol, right click, select “save as”. In the newly opened window, scroll to, and highlight a personal library, change the name to TA7358 and save.
Open your personal library and this symbol. Delete one pin and rename the others. perhaps move some of the pins to different locations around the rectangle.
Now you have a symbol you can use on any project.
For the footprint, there is a SIP 9 in the Package_SIP library. If you are not happy with the size and shape of the pads, move this footprint into a Personal Footprint Library and modify the pads to suit yourself.