PPC ADVICE (worth running it all day?)


I set PPC campaigns and they always run out of budget due the small amount i choose.
What is the best time to run PPC in UK? 9am or around 5pm monday to friday when most people are finishing work. Also is it worth running PPC over the weekends?

my PPC of £5 only last few hours so i pause it during the day and run it after 5pm with the hope of targeting more people after they’ve left work.
Merchandise = Footwear.

Any advice would be appreciated.
Thank you.