I don't know if a rollator or wheelchair will be best for me

So I have seizure disorder, and in the lead up to seizures, and then after them, I lose a lot of my ability to stand up without additional support. This can sometimes last for hours and happens multiple times a day. I also find I get physically fatigued very quickly from walking.

I have a cane but it is absolutely not enough. It has been helpful in reducing how quickly walking fatigues me, but the moment I start to wobble as a seizure is beginning, it stops being any help at all.

I need something better, and preferably something I can sit on, as that would be the safest for me when I have a seizure.

My issue is, I dont know if a rollator or wheelchair would be best for me.

Rollator

Pros: I can walk whilst using it, giving me much needed exercise whilst also providing support until I need to sit down.

Cons: I am standing while using it, meaning I still have to try and sit down in it safely as a seizure begins. Not as unsafe as without it, but still not great. Also after a seizure I wont be able to get around for a while as Id need to be able to stand which can be difficult even supported.

Wheelchair

Pros: Sitting while using it means theres no worry about falling whilst trying to sit down in it when a seizure happens. It also means that Ill be able to move after a seizure much sooner as I wont need to stand up.

Cons: I might not get as much exercise as I would with a rollator. Doesnt provide any support for walking, meaning I cant walk even if I feel up to it.

Does anyone have any thoughts or advice? Honestly just typing out my thoughts has helped but I would really appreciate the insight of those that have more experience with mobility aids.