multi-column posts template with thumbnail

I tried code from Alchymyth
https://www.transformationpowertools.com/wordpress/multi-column-wordpress-template

I have post the code to https://wordpress.pastebin.com/Ec8pQTRS I do offline so i cannot show you my URL as i haven’t upload it. Those code should work perfectly to call category but as I said above it shows to
_______________________________title & thumbnail_______________________
_______________________________title & thumbnail_______________________
__title & thumbnail__ __title & thumbnail_
__title & thumbnail__ __title & thumbnail_

instead of
__title & thumbnail__ __title & thumbnail__ __title & thumbnail__
__title & thumbnail__ __title & thumbnail__ __title & thumbnail__
__title & thumbnail__ __title & thumbnail__ __title & thumbnail__

I tried https://wordpress.pastebin.com/CLYY2Y65 but it just shows all the posts I have (I want it to show only if somebody click the category) and everytime I change the coloumn into 4 coloumn it still shows 3 coloumn.

oh and the css is col1, .col2, .col3, .col4 {float:left; width:150px; padding-top:10px; padding-right:5px; }

Please anyone help me