Imagine 10 years ago when internet is not that prevalent yet. How do you think those PHD student write their thesis? Through a lot of hard work and advise from their professor. That's what university professors are for. To guide you.

If you have so many things in life then you don't have time for your thesis, who is it to blame? Most people doesn't take up phd because they don't have time for it. They need to make a living to support themselves. You are lucky you have the chance to go for phd. So appreciate what you have and put more effort into it. The professor marking your paper will look at your thesis and see how much effort you put into it. They can easily know if you are using shortcuts or did not put enough effort into it.