Low Season - Icky looking ghosts show up now and then and there are some well-timed, and funny, jump scares, but it's not horror and it's not scary. The female lead sees ghosts.
Mostly it takes its time to wander around the lush North Thailand landscape with no grand plot, just two people becoming friends and figuring their relationship out. It's like a wee holiday.
Suddenly 20 - Funny and heartfelt. Young Mai Davika channeling Audrey Hepburn channeling a feisty, outrageous gran.
My Boo - Rom com with ghosts. Ghosts aren't icky looking and it's not scary at all. There isn't a whole lot of plot but it's sweet and funny. Like many Thai movies, it's very unrushed, which is something I've come to treasure.
These are all comedies. Thailand also has a lovely way of surrounding sadness and grief with warmth and kindness. They have a much gentler pacing then Kdrama so it depends on whether you're addicted to sadness or to the K- emotional rollercoaster. If you're open to trying a different approach, maybe something on here will appeal? Moonlight Chicken is an excellent one to start with. There are moments in there which just cradle the characters' pain, ours too if we let it.