Peter begins describing the characteristics of unrighteous men.
The word "this" refers to God keeping unrighteous men in prison until judgment day in 2 Peter 2:09.
Here the phrase "desires of the flesh" refers to the desires of the sinful nature. AT: "those who continue to indulge their corrupt, sinful desires"
"refuse to submit to God's authority." Here the word "authority" probably refers to God's authority.
Here "authority" stands for God, who has the right to give commands and to punish disobedience. (See: rc://en/ta/man/translate/figs-metonymy)
"do whatever they want to do"
This phrase refers to spiritual beings, such as angels or demons.
"more strength and power than the false teachers"
The word "they" refers to angels. Possible meanings for the word "them" are 1) the glorious ones or 2) the false teachers.
The idea that angels could accuse them is spoken of as if they could attack them using accusations as weapons. (See: rc://en/ta/man/translate/figs-metaphor)