Car won’t crank

I took off my starter went got it check they said that it was fine at the moment and for the relay they said the same things. The pumps work it’s fine. It’s like I get power once I try to crank it up nothing. I have been googling stuff and they said some professional can’t figure out. Then another video said it’s some time a grounding wire

Like these wires it says to unscrew them n stuff I tried it too but nothing

If you didn't disconnect your Security system before you worked on it. It is your Ecm Egnition control Module..Anti theft system total bullshit that you aren't told. I am a female and I owned impala nobody could figure it out. I sat down with my Hanes book on the Car and learned every single inch of the Bypass Ecm.. Your car will start with help from you . Your fuse box in your car track down the 10amp fuse for your ECM and pull it put pop it back in until your able to start car. You're able to see it now on Google if you look up the Egnition Control Module fuse . Its shitty but it's true. That damn Security Shit is Such a Joke! I wasn't able to Afford to do what Chevy told me had to be done 2500$ to Totally Reprogram that Security system.. so I drove my car for 2 years popping that fuse in and out to start my car.. It sometimes took me 20xs...Good luck to you!

I found out that every time you do a new starter you should have a new ground