Mirage gls cvt 2013(help)

Good day to all. I'm from Philippines and have little to none what happened to my car. Please bare with me as i don't know if I'm using the correct terminologies. I'll try to keep it as short as possible

So i didn't use my car for a few days 3 or 4 i guess. When i try to use it a while a go it won't accelerate properly. Won't go faster than 20km/h but the rpm go up fastet than it should. I barely stepped on the gas. And when i try to step it to move forward it shakes like stop and go *am i making any sense? * so i just turned around and just park the car.

I need your advice as i don't know what to do. My car is already out of warranty but this is the 1st time i experienced this.

Thank you very much in advance.

Edited:
Additional info regarding for recent questions.
- "D, P, R, N, B", In dash not blinking.
- no warning signs on dash.
- cvt fluid is in fine condition. Just have it changed recently.
- fluid indicator wires (under the backseat) reconnected 4 or 5days ago. (fuel indicator blinking and showing that there's no fuel but it has and in full tank so i have it checked and wires are cut.)

Is the gear indicator on the dash blinking when you put it into "D"? If it is then the transmission is in "limp mode" and there are codes that can be read with a OBDII reader.

I just checked it and it's not blinking on "D" or park neutral, reverse and B

That doesn't sound good. Is there any fluid in the transmission when you pull the stick? What color is it? It should be clearish light brown.

Are there any warning indicators on your dashboard?

@Fummins it has and clear light brownish color. I recently changed it like 3months ago i guess.

@eggman no there's no warning sign indicator.

I forgot to tell that i just recently have my fuel indicator wires under the backseat connected because when i have it checked it has been cut.

Total shot in the dark, do all your brake lights work properly? Do you have regular bulbs or LED?

All rear brakes are stock and working except 1 from aftermarket rear bumper skirt that comes with rear lights to that they tapped in stock rear lights 5yrs ago.

Have you used the OBD scanner? I'm assuming ECU troubles.