[Theodorable]

So today I got off work and when I got into my car and put it in drive something just felt off. I didn’t realize until right when I got into the freeway. So what is happening is my car is like stuck in 3rd gear. It won’t shift up or down. I go into manual mode and nothing shows up. Floor shifter and paddles don’t work. I gassed it to see if it would change like it should but it doesn’t. I was cruising home for like 20 min at 70-75mph at like 4000k+ rpms 10mpg cause who knows why the gears are bein this way. No light comes up I hear my motor gasping for air. When at a full stop the car won’t move forward till I put a lot of gas into it and it starts moving but the thing is, it never switched gears I believe. It was always in the same gear. So I don’t know what the problem is I need help and insight Thank you!

Note (I had 2nd gear slip before but I redid the fluid and tipped it off and never had a problem since this was 8 months back) so I know the fluid is brand new and you never really need to change it anyways unless for reasons like slippage so I assume that’s not the problem (trans fluid) that is. But I could be wrong so all help is needed and appreciated!