DS 4.6 is like this! Negative, whiny, always tired (or unwilling/lazy). He just wants to watch TV and play on the tablet all day. I have to make a conscious effort to drag him away from them. He doesn't like the park, and neither do I, but loves the museum, so DH takes him once a week to one of the two in our city. He hates walking and will only cycle short distances (a mile or 2), so for longer distances we have to use the bus, so that limits the outings somewhat.
We do the occasional playdates, but he can be quite grumpy and embarrassing - asking to go back home after 10 mins if he doesn't like the toys or is feeling bored. He is also a bit of a scaredy cat and won't do a hobby class without us, so can only do one dance class a week where a parent can accompany (although he only goes when he fancies it - every other week or so). He is scared of public loos and big birthday parties in halls (because the noise and abundance of people), so quite a sensitive soul.
He doesn't like lego, playdough, cutting veg or art/crafts, as his fine motor skills are a bit lacking and he is a perfectionist. He also is quite fussy with food, so hates most cooking smells. However, he likes mazes, and will do them occasionally. Kumon maze books are good and so are those wipeable ones.
He doesn't care about stickers or magazines. Doesn't want to read independently, although he can, but likes to be read to (only before bed). He loves baking sweet things (and eating half the batter in the process), but we can't really bake every day. We'd all be huge! I wish I could get him interested in bread baking. He likes to build brio train tracks, play airport or buses going around their routes stopping along the way, and racing with his die cast vehicles, and have imaginary chasing/rough and tumble games where he is e.g. a cat and I am a monster. Sometimes I have the energy for them (rough and tumble can be done sitting on the sofa), but I bloody hate the cars and aeroplanes.
But, what he also loves, is looking at google maps and zooming in and out of places and looking at earth in space. He will, for example, choose that he wants to visit the airport in Madeira and then use street view to pretend he is driving there.. or look at the e.g. polar regions/Iceland.. I quite enjoy doing that with him (if the bloody computer's not playing up).
He also likes a spot of gardening, helping me by pretending to be a tractor and taking my bush cuttings to the compost heap, or over watering the plants. If the ground is dry and I am feeling energetic, I will draw a train track, airport runway, road, etc. on the paved bit of the back garden with pavement chalk. DS then plays there with his die cast stuff.
Uh, sorry.. this is so very long.. also not very helpful. But if it helps at all - I know how you feel, op!