The tropes that I find and love that comes to mind are:
Friendly Rivalry
I love myself some good ole’ friendly rivalry from time to time. Like sometimes I just want a break from a rivalry that’s all “I’m going to literally kill my rival if given the opportunity” type.
I love the childish/friendly rivalry between the RO and MC that’s meant to serve as a healthy motivation for both parties!
Something like “Bet I can reach a higher score than you! So you better up your game then!”, or “I know you can do better than that, you’re my rival afterall and I know how you usually act very well.” being said in a friendly/encouraging manner with no malice just makes my happy chemical go up.

Hard exterior but soft inside
I love it when an RO has a hard exterior but very sweet inside! I’m a sucker for this trope because who doesn’t love the contrast of an intimidating, and stoic person who has alot of scars — ones that speaks to their harsh past that rendered them cold and aloof …but at the same time they’re cuddling and baby-talking to a small little kitten with a small yet genuine smile on their face — like istg It’s literally high quality healing material🥰
Animal companion
I. Love. Animals. So any idea of an animal companion following the MC is always an automatic yes in my book🥰
also bonus points if said animal companion possesses the ability to talk because being able to communicate with animals?
Sign. Me. Up.
Angst. Angst in general.
I love all forms of angst varying from the classic star-crossed lovers to the bittersweet ending where one or both parties die off.
One in particular that I love is the angst of things being changed by time!
Whether it’d simply be from nostalgia like revisiting a memory from the past that’s long gone — a past that’s never gonna return no matter how much you’d love for it to come back — or maybe witnessing the transition itself from the more simpler and happy times turning to the more complicated and harder times right before your very eyes… ig I just love being hurt🥰
Soulmates
This concept is so cliché but so good🥰 I love the concept of having that one special person that you’re bound to from the very moment you’re born and I consume all media related to it <3
I also love it when reincarnation is thrown into the mix! Maybe in the past the MC and RO led an depressing and sad life and couldn’t be together but then again they’re soulmates and bound together so they get reincarnated and meet eachother again in a more happier setting — anfkwmxmamd the angst and fluff potential of reincarnated soulmates is so good 

I have a ton of other tropes that I also love but it would take me too long, so time for the ones that I dislike!
…which aren’t that many truth be told as I genuinely do believe that any story — as long as it’s well written by an competent author — can be pulled off!
But the tropes I dislike in general are:
Harem
I don’t have much of a problem with the idea of like 5 people competing for the attention of one person as that can introduce some good tension for the story, it’s just that most of the time the way that this is excecuted is… poorly, to say the least.
Most of the time the MC would have the personality of a white bread. Like if you were to search up examples of the word “boring”, they would be the example used.
And in some harem VNs the MC is generic-looking and can easily be mistaken for a background NPC, so to think that alot of people would be remotely interested in a boring MC — who doesn’t stand out in the slightest — is baffling to me.
Then again the harem genre mostly works as a self-fullfillment fantasy so if you like harem then there’s nothing wrong with it! I just personally don’t like harem.
Asshole ROs
Before anything I’d say that asshole ROs are a guilty pleasure of mine as I do enjoy the tension of hatred between the RO and MC that is as long as they’re written nicely.
My main problem is when said asshole RO that treats others like literal trash are written to be seen as something good.
They’d get no repercussion — not even a slight negative mention for the way they treat others at all and it’s written in a way that romanticizes it.
Like they would be a literal piece of dogpoop, commit several warcrimes, maybe even commit arson to the MC’s house and literally frame MC of murder but then it would all be justified because they’re hot and attractive.
I’m not asking for the asshole RO to be the picture-perfect definition of a good citizen, nor am I asking for them to be as realistic as possible, because fiction doesn’t have to imitate reality — I mean fiction IS fiction and seperate from reality for a reason, but this way of presenting the asshole RO just… irks me.
Anyways those are some tropes I love and hate in CoG and other similar games that comes to mind 