Hi! I think this is a really complex issue and there's not really one answer. Personally I morally disagree with sex work as a business mainly due to the treatment of women within these fields. For the sake of simplicity I'll only be focussing on women in sex work.
Porn and sex work rely on the consumer seeing sex workers as objects to be bought, these women are not seen as people but rather their bodies and what they can do, I believe there is no ethical consumption of pornography or participation in prostitution due to this. However this does not mean I do not support women within the industry.
The idea that lots of us have of sex workers are rich and famous porn stars who can survive solely off of their content, however this is a flawed belief set. The average only fans creator makes just $150 a month so around $2000 a year, obviously this is not enough to survive on. These woman are often forced into sex work due to finical issues, in a society where women are continually objectified sometimes the only option for those in need is turning to sex work, this adds an extra level of complexity to the idea of sex work ever being morally okay.
Recently I read a very interesting academic journal on the morality of sex work, it's called A Moral Analysis of Prostitution, if you search it up it should be the first result. The journal comes to the conclusion that any sex act that takes place between two freely consenting adults is morally acceptable. I disagree with this notion due to the fact that sex work involves some sort of monetary trade, whether that be money, housing, food, etc, because the existence of a monetary trade for access to a woman's body affects the woman's right to freely consent. She is swayed whether through necessity and often desperation to consent to sex acts, therefor by definition this makes sex work morally unacceptable.
However, touching on my previously point, if woman are forced into sex work due to the results of capitalism and the patriarchy why should we as feminists diminish them as fellow woman and not support them. This is why personally I support individual sex workers, however I do not support the industry.
If you're interested in reading up on this I suggest Pornography by Andrea Dworkin.
I realise this is a very long winded answer to your question but I hope it interests you! def msg me if you want to talk more I'm trying to link with some more feminists on here and so far Ive only found incels lol.