How to set the font, clock and alignment?

Hello, I started to get used to Libraoffice, however, I cannot set the font, time, alignment as I want. Each time, I have to go to format tab, and select cell and change every thing for each line!!!

I tried to preference tab, but I cannot find how to set it.

Please help. I get too frustrated and am attempting to go back to Excell.

Thank you!

(I don’t know a ‘clock’ property applying to cells.)

Any formatting you want to set for the complete document basically you should set by editing the ‘Default’ cell style. (Use F11 if the stylist is not shown.)
f you want to make your changed ‘Default’ available again and again, create it in an empty document, and save this document as a template to the ‘template’ folder of your user profile. Now you can create your new documents via > ‘File’ > ‘New’ > ‘Templates’. You can also make any template your default template via > ‘File’ > ‘Templates’ > ‘Manage’.

Another way applicable per document: Create an extra cell style ‘MyDefault’ (e.g.) and apply it to all the cells of the complete sheet. The next sheet you insert will contain ‘Default’ cells again, however.