So I recently flushed my cooling system and after words noticed I didn't burp it properly, so I purchased a no spill funnel and started to go through the steps and noticed that the coolant was rushing back through the funnel, I waited a second and then it just kept getting sucked in and pushed out. Vehicle was warm and all the bubbles stopped coming out. Is this normal? Or is that definitely head gasket issues? I don't have any colored smoke. Also my rad hose keeps collapsing even though I got a new rad cap.
This is a video of it happening .

 

A faulty coolant reservior cap (radiator cap), blocked or restricted overflow tank line is the most common culprit. Try equalizing to atmospheric pressure (remove and reinstall cap) in the system when the vehicle is cold, and if the hose is slow to return to it's normal shape, check the overflow tank lines for restriction or blockage.

 

I checked the lines and there not blocked. The hoses quickly return to shape when removing cap. And i have used 2 different new caps and same thing happens

 

Check the coolant for exhaust gases.

 

that's my next goal. Im gonna got get ne of those tester

 

so today I did both exhaust leak test, the one with the blue fluid that turns yellow of theres a leak. It came back good not chamging of colors. Along with that i did a compression check and all 6 cylinders are good, very close to 160psi

 

That is a normal situation you describe when trying to fill and burp the cooling system
Time is your friend and so is raising the front of the vehicle
If you wait about a half hour you will be able to add more coolant cold
Do that three times and then start the engine
Let it burp itself (with the cap on) is what I do