Unfortunately I work hours from 7am-8or 9pm every day so my only chance to have someone look at the car is on weekends when all shops near me are closed or if I do it myself so I am hesitant to take it to a professional just because I really dont have the time or a real trusted shop near me. Ok now for your questions,
So I will turn the key and it will start with no problem but for a few seconds after starting it feels low on power or like it is struggling, since my gauges do a sweep it is hard to monitor the RPMS so I am not sure if that is the cause in my problem. This post here on this forum is the closest thing I have found to my issue especially auditorily, he has a video of the problem.
https://www.evoxforums.com/posts/5296689/
The new battery made the loss in powerless apparent, like it wasnt losing as much power which is why I thought it could be the terminal but if that is normal wear and tear idk if that could cause it. before it felt like it was lower on power as compared to what it feels like now. And I only say my starter is going because In another post on this site, I found someone who would get a similar hesitation after ignition and it was their starter. And like I mentioned I was going to get an oil change as I thought the Lucas I use during oil changes could be too thick when left to sit overnight so I was not going to use some this time around.
Additionally, just now I went to listen for a vacuum leak as I do not have a smoke machine for testing and found that the whole intake hose after the MAF and filter was about half on the throttle, not sure if that could cause problems but the throttle didnt look too bad, just slight black around the edges not thick at all. So I got that clamped back on, too early to tell if it helped with my starting though. I do get the occasional shake or vibration at idle, which you can see in the engine/air filter box shaking slightly but I assumed that was normal and it seemed the fixing of the filter tube or whatever you would call it helped with the shaking slightly in the cabin but not the engine bay if that makes sense but again too early to tell.
That is all I got for right now sorry if it isnt helpful, but let me know what you think.