Please Help Me Find This Manga

Protag transmigrates as the villainesses fiance and is in love with her

So I read these a while ago and want to re-read them but I cannot for the life of me remember what they are called.
Manga 1: Male lead lives in the boarding house run by the girl's dad and I think he refers to her as a landlord. He seems goofy and wears glasses but in reality he is a famous singer in a band. I remember one chapter she goes to his hotel and when she is leaving, thinking that he rejected her, he catches up to her on the elevator and they kiss. I'm not sure if that helps, but that's all I can remember.
Manga 2: The girl reads lyrics that the male lead wrote on his desk and it makes her interested in him. I feel like the title had the word senpai in it but I'm not sure. They start dating super early in the manga and he starts liking her more and more as they date if I remember correctly. I'm trying to remember specific chapters. There is a chapter where they are having a school festival and she visits him and he is hiding in a box for his classes' haunted house and she gets in the box with him and they start kissing. That's all I can remember.

If I remember it was a psychological manga or smth, maybe not. It was about this dude who took pictures and went to a bakery to take some pictures of the place and food or something. He and the grandson of the owner went to this hotel room, I think, I don't remember. Then the guy gives the grandson some drink and he gets knocked out.

Looking to re-find a manga I read a while ago. It was yaoi or shounen ai, don't remember which. MC was depressed and had no job, passes by a bakery (with a french name) and gets hired on the spot by ML. MC learns to cook in the bakery, but realizes he has lost his sense of taste (due to depression) when he prepares a meal and adds way too much salt.

MC wants to pursue a relationship with ML, but ML refuses (he previously had ties to yakuza and a friend got hurt protecting him so now he doesn't want to be involved with someone). There is a mother who works in the shop with a young son, and MC thinks there is something between her and ML, but it's just that the dead father is the one who was hurt protecting ML. MC and ML do end up together in the end.

I've tried searching everything, please please help me find this!

a yaoi story that involves with poison or love potion/spell please (can be a novel and dark or wattpad idrc)
sorry mangago isnt letting me questioning down there i hope helpers can see this on here ┗( T﹏T )┛

Hello everyone (⌒▽⌒)☆

Well I need help to find a yaoi. It’s about a world were virgin was the upper most and a school was especially for them. A youngster needed to interview a new student who was rumored to have some fun before.

If you know, can you please reply （>∀<）