These are some of the translations of 4:24.
Sahih International: And [also prohibited to you are all] married women except those your right hands possess. [This is] the decree of Allah upon you. And lawful to you are [all others] beyond these, [provided] that you seek them [in marriage] with [gifts from] your property, desiring chastity, not unlawful sexual intercourse. So for whatever you enjoy [of marriage] from them, give them their due compensation as an obligation. And there is no blame upon you for what you mutually agree to beyond the obligation. Indeed, Allah is ever Knowing and Wise.
Pickthall: And all married women (are forbidden unto you) save those (captives) whom your right hands possess. It is a decree of Allah for you. Lawful unto you are all beyond those mentioned, so that ye seek them with your wealth in honest wedlock, not debauchery. And those of whom ye seek content (by marrying them), give unto them their portions as a duty. And there is no sin for you in what ye do by mutual agreement after the duty (hath been done). Lo! Allah is ever Knower, Wise.
Yusuf Ali: Also (prohibited are) women already married, except those whom your right hands possess: Thus hath Allah ordained (Prohibitions) against you: Except for these, all others are lawful, provided ye seek (them in marriage) with gifts from your property,- desiring chastity, not lust, seeing that ye derive benefit from them, give them their dowers (at least) as prescribed; but if, after a dower is prescribed, agree Mutually (to vary it), there is no blame on you, and Allah is All-knowing, All-wise.
Shakir: And all married women except those whom your right hands possess (this is) Allah's ordinance to you, and lawful for you are (all women) besides those, provided that you seek (them) with your property, taking (them) in marriage not committing fornication. Then as to those whom you profit by, give them their dowries as appointed; and there is no blame on you about what you mutually agree after what is appointed; surely Allah is Knowing, Wise.
Muhammad Sarwar: You are forbidden to marry married women except your slave-girls. This is the decree of God. Besides these, it is lawful for you to marry other women if you pay their dower, maintain chastity and do not commit indecency. If you marry them for the appointed time you must pay their dowries. There is no harm if you reach an understanding among yourselves about the dowry, God is All-knowing and All-wise.
Mohsin Khan: Also (forbidden are) women already married, except those (captives and slaves) whom your right hands possess. Thus has Allah ordained for you. All others are lawful, provided you seek (them in marriage) with Mahr (bridal money given by the husband to his wife at the time of marriage) from your property, desiring chastity, not committing illegal sexual intercourse, so with those of whom you have enjoyed sexual relations, give them their Mahr as prescribed; but if after a Mahr is prescribed, you agree mutually (to give more), there is no sin on you. Surely, Allah is Ever AllKnowing, AllWise.
Arberry: and wedded women, save what your right hands own. So God prescribes for you. Lawful for you, beyond all that, is that you may seek, using your wealth, in wedlock and not in licence. Such wives as you enjoy thereby, give them their wages apportionate; it is no fault in you in your agreeing together, after the due apportionate. God is All-knowing, All-wise.
This verse if we take "malakat aymanikum" to be about slaves, would say, that you can have sex with slave woman who is married to another slave for example. This put's them in a position of ultimate disgrace and it's as if God doesn't even care about slaves at all or their emotions.
But if we take a step back, and see in the translations I already provided, it would means "all married women except who you are married to", but instead of "married to", it says "malakat aymanikum" which shows marriage is way to have sexual ownership on a person. That is the woman has full authority over the man in this regard and the man has full authority on the woman in this regard.
But then it talks about another type of thing is lawful, which is Muta…. Where it's translated as "you enjoy" "istamatu", it can be seen given the historical context of Muta, to be about Muta. That, and it's giving another scenario where women are lawful to have sex with, so it has to be about another type of relationship.
We will look next at the verse follows it in this context, which can also be seen as about slaves, but in the context of Muta, is really about Muta and whence you should do it (when you fear curse of God and can't get married) and also other things pertaining to it.