Worried! Please help!

My 2009 Toyota Prius touring seems to be having acceleration issues, but as I paid attention to when these issues occur I've noticed that the issue occurs when the vehicle is in hybrid mode and when it's using battery only. Maybe it lies in the transition between hybrid and gas mode, not sure. But when I am accelerating, sometimes the vehicle feels like it stops accelerating and has a pull to the acceleration which is similar to the feeling of breaking. I recently had my brake actuator replaced as well as new brake pads and I took it to the dealer and they saw nothing wrong with the brakes. But these issues occurred before I did all of that brake actuator and brake work on the car and they are still occurring after those fixes. I'm not sure what the issue is but like I said I've noticed that it happens when I'm accelerating even when I'm in cruise control, I'd say it happens about 10% of the time and it's a little worrisome. Does anybody have any clues as to what it is? I'm trying to repair this issue before an engine check light comes on because as of writing this post I have no bad lights on whatsoever. I have been going easy on this car and I'm still getting 50 mpg so that's good. Please help! I am already financially struggling so I'm trying to get ahead of these repairs before the problem worsens.

 

178,000 miles

 

No it doesn't flicker, no lights flicker at all not even the check engine. And I pay attention to the energy consumption on my MultiMedia display and it shows that it happens when I'm in battery only mode trying to switch to hybrid mode

 

Update: so I purchased an OBD reader on Amazon specifically for Toyota and Lexus and that will get here Sunday, furthermore yesterday I was driving towards a friend's house and luckily / unluckily within the first mile my dashboard lit up like a Christmas tree and now I actually have some lights to work with until I get the OBD reader and download techstream on my laptop Sunday.

The lights on my dashboard are as follows from left to right: Red Triangle, (!), VSC, Engine Check.

Upon further investigation before these lights came on, I found that when I was cruising in battery only mode that is where the problem lies, I noticed it when I was on the highway in stop and go traffic that my vehicle would have spurts of energy in battery only mode and after about 5 seconds of struggling it would force switch to hybrid mode and within that switch is where that violent shrug I've been feeling happens with the engine. I'm not sure if this is a bad battery cell problem or something wrong with the inverter, any clues as to what the cause may be?
this morning I'm going to take the vehicle to AutoZone to get it scanned luckily it's literally right around the corner from me that way I have something to work with if I need to order some parts or tools.

My confidence in DIY has been increasing ever since I swapped out my own brake actuator so whatever this problem is I will probably try to solve it myself, I'm already $3,000 in the hole with this car. And my secondary vehicle which is a 2008 Prius has issues of its own and is at a way higher mileage at 270, 000 miles when this 2009 is only at 179,000

 

UPDATE

Okay so I downloaded
techStream and got a mini VCI and this is the code that popped up.

 

Sorry for late reply you guys, so so far since I have taken possession of this vehicle I have swapped out the catalytic converter for a brand new one, I installed a brand new 12 volt Toyota battery OEM, put in a old 2008 Prius brake actuator, fixed the odometer computer display myself, and have swapped out the entire battery pack from my old 2008 Prius which I just used for parts and swapped it out for the failing pack in my 2009 touring. Swapping out the battery pack ended up solving the problem but it's only a Band-Aid fix, yes thank you so much you guys for telling me about the snowflake icon I did not know to click that, I have the failed battery pack in my living room, I might just order a bunch of high-quality modules and slowly swap them out so in my hybrid battery goes out again I can be prepared. Same with the break actuator, I have another one on standby in case the replaced one fails. Swapping out the entire battery pack also solved my acceleration issues with switching between battery and hybrid mode that I was experiencing with the previous battery pack. Surprisingly enough the failing battery pack was giving me more miles per gallon which is odd but I'm just glad to not have those issues anymore and I feel that this car is now finally driving properly.