Just my opinion - but Stardew Valley, for me, is best enjoyed in the same vein like something like Harvest Moon or Animal Crossing.
It is like Sims: Rural. I liked the idea of someone being sick of the corporate drone lifestyle and being given the opportunity to start a new life in the country-side.
While I agree, especially in the beginning that the timers do feel restrictive, farming can be a chore when you are starting out and the stamina can be annoying but it has been built towards an idea that
"This is your character's life and just enjoy a new start in the countryside"
It does get easier, more streamlined and opens up more options when one starts getting into the specialisations in leveling and gain benefits from progress which brings with it more "set and forget" tasks (like ancient fruit in a green house with sprinklers) which are profitable and if farming isn't your thing I was going to say to try animal husbandry - which starts out with just giving the animals you buy some attention and food everyday ( buy hay or use a scythe on long grass), open the barn hatch in the morning (when not raining) and close it at night and collect the resource either by picking it up or having the right tool for the animal.
Animal husbandry is a lot of initial setup and then animal maintainence to get a resource, which leaves more time to explore other aspects of the game
I guess it is a game best enjoyed to roleplay as one learns about everybody in the valley and make your mark as someone of important as you can either make your fortune, have a family, make friends or just check off the list of collectables
I do feel it is a bit unfair to compare it to something like Rimworld as it is a great colony simulator in its own right with it having the focus of developing a "blank slate" community of random people in a harsh and cruel world where the player is the "architect" as you create the plan and the pawns enact it.
Comparatively, I do feel Rimworld farming is more involved than in Stardew Valley as there is a lot of external factors to consider like fertility, effective crop placement to avoid disease ruining all your crops if your pawns are too slow to contain it, raiders burning it, weather and events that ruin the crops, etc)
While Stardew it is a cycle of seasonal preparation, planting, watering, scarecrows placement to avoid crows stealing crops and harvesting - it is quite simple although more hands-on in practice and some of these steps can eventually be automated.
I guess Stardew Valley is predictable and consistent without much risk and can come across as a chore whereas Rimworld has a lot of external variables that keeps one needing to have a plan in the back of one's mind when things go wrong.
Fair enough if you do not find it interesting, it might just not be your style of gameplay. Give credit where credit is due that you gave it an honest go at it and if you do not refund it it, maybe you will enjoy it one day