Is Instagram Reels algorithm similar to TikTok's?

I'm kinda late to the Reels game, so sorry for the noob question. With TikTok, you can achieve a lot more global exposure if you use a USA TikTok account. Is it the same with Instagram Reels as well? If I'm not from the US, should I manipulate the system to think that I'm from the US in order to see success with posting reels and reaching a large global audience?

IF THAT IS THE CASE WITH INSTAGRAM: Can I still manipulate the system using an account that I already opened regularly using my IP and the IG app on my phone? I just got a good username and hope that I can use this account.