Assalamualaikum...
Islam sought to eradicate slavery through a gradual approach in order to avoid social and economic instabilities. therefore, measures were taken to get rid of the practice over time. for example: freeing a slave became required for the expiation of certain sins; slaves who were capable of supporting themselves were allowed to free themselves by paying their masters or completing certain errands for them; a woman who became pregnant by her master was automatically freed, and her child would be born free. through methods such as these, Islam ensured the abolishment of slavery
in regards to right hand possession, the point of it wasnt for the pleasure of the male owners, but rather to protect the women. in pre-Islamic times, female captives were used sexually abused by their captors, but Islam sought to destroy this practice. through right hand possesion, these women were provided for and taken care of and their dignity was preserved. had they been left to fend for themselves, many would have turned to prostitution, as was their fate in earlier days. another point to note is that Islam uses the phrase right hand possession. in Islam, the right hand is used for things such as spending, giving charity, and making pledges, thereby showing its importance. by specifying which hand, it signifies the proper care and good treatment that these women were to be given.