The reason why you really need to post a picture is:
1) The guy in the other picture is probably much less than 30% bodyfat.
2) At 6' 75kg, it's hard to imagine you are 30% bodyfat.
This is important because the best advice for you drastically changes depending on your actual bodyfat. If you are actually 30% bodyfat then you should begin drastic calorie restriction and/or intermittent fasting. It's also not very important to worry about high fiber or high protien food. At 30% bodyfat you will be able to lose 99% fat for quite some time pretty much no matter what you do.
However... If you are closer to 15-20% bodyfat, then drastic calorie restriction or IF may lead to the loss of some lean tissue as well as bodyfat. In this case you should be a little bit more careful to consume adequate amount protein and do some compound lifting so you will lose primarily fat.
That's why you should post a picture. Ideally it should be a picture in tights/compression shorts*.
One thing I really don't get on this site is people posting videos asking about their sprint or squat form where they are wearing huge t-shirts and baggy basketball shorts which obscure everything. I guess that is some part of basketball culture... but seriously people grow up and dress like actual athletes when you want video advice.