As kindly requested by @Decannen, Here it is! I will also upload a shorter version so that if you do not want to watch all this again you don't have to, and just get straight to the point!
America main hain aur wajud rkhte Hain ye students real main Hai and secret Hai ye koi story nhi Hai 🙇dreams main mila Tha students se but Jo ye Dr. Strange Hai ye nhi Tha students the and aur wo portal changed kr rhe the rooms ka meri nazaro ke samne ye dusri duniya ke parani hum normal humans par research kr rhe Hai humko Pata bhi nhi Hai agar ye Hai to humari rkhsha bhi kr rhe Hai but ye movie story story nhi hum sab copy aur ye real life main second third forth universe main ho rha Hai. 🙇
in my theory when every one was trapped in the soul stone and smart hulk snapped his fingers around that time my guess is that it opened a way for dr strange to get his powers back it set them back to the infinity war fight to where he still had his ring so he makes a spell to where it opens a portal where everyone was stuck at so they can walk in the battle field this movie was smart as fuck defeat old thanos before he becomes to powerful in the future problem solved