I need help to run multiple IDs on same device if it's possible

I recently started online betting (it’s legal here). They used to give out promotions so I made 4-5 accounts logged in on 5 different browsers. Now, they’ve asked us not to misuse the promotion because from today onwards, IP addresses would be checked and all IDs logged in on same IP during the matches they give promotions on would be freezed. Now,first of all, explain what IP is because I’m a little confused if it is the address of the network on which I use my laptop, or is it the address of my Laptop (it was the MAC address as far as I remember that’s why I’m confused).

My options are:

1)Use chrome web extensions of VPNs on every different browser and log in. (I dont trust VPN Web extensions a lot)

  1. Use different smartphones with different SIM networks not connected to wifi one account per device

  2. I’m looking for any better ways if possible

First off, in regards to opening multiple accounts to take advantage of a sites promotion, don’t be surprised if they ban your accounts. Especially with betting sites who are notorious with making sure they keep their money. With that said…

In regards to your question about IP addresses, it can either be private (internal) or public (external). A MAC address is irrelevant in this question as that’s a hardware ID, which is not going be be used in this context.

Any device that connects to your home router, will be assigned a private IP address. This is how your router manages the traffic between each device within your network.

You also will have 1 public IP address assigned to you by your internet provider. Any outgoing traffic that comes from any device within your network, will use your public IP address.

Based on your question, the site will be looking for your public IP address.

Now to answer your questions…

1)Use chrome web extensions of VPNs on every different browser and log in. (I dont trust VPN Web extensions a lot)

Depends on the type of chrome web extensions. Most “free” vpns are not secure. I would not trust any free VPN, especially if you’re going to be using it with accounts that have money involved. Just sign up for a reputable VPN service and install their VPN application.

Secondly, most betting sites have a comprehensive list of VPNs that they ban. Finding a VPN provider that works with your betting site will be the challenging part.

  1. Use different smartphones with different SIM networks not connected to wifi one account per device

This would work as each device would have a different public IP and probably your best option going forward.

  1. I’m looking for any better ways if possible

There are no other options around your issue as you’d need different public IPs.

  1. Use different smartphones with different SIM networks not connected to wifi one account per device

That’s your best bet., and for the love of gambling, don’t place those bets on the same wifi network.