Getting Internet on iPad where theres no WIFI and poor 3G/4G connection

MiFi works over cellular network. If the MiFi cellular data provider is the same, you will get poor signal, just like the iPad. Find out if there are other cellular providers (in that area) with stronger signal. That's your possible solution.

If there's poor 4G/LTe reception for the iPad, the same will apply to the Mifi device from the same carrier. i.e They use the same cellular service/reception as the iPad. You may try to get a Mifi device from a different carrier if they have better service / reception in the area though.

Unfortunately, if there's no Wifi, and poor 4G/LTE reception, there's very little else that can be done. These are the 2 ways to get internet on an iPad. There's no magical 3rd way.

Your only other option is to talk with someone where you are staying and inquire about adding a wifi router. Assuming they have internet access of any kind in place.

i forgot the passcode

What does that have to do with this thread? See here, maybe: https://support.apple.com/en-us/HT204306

I would suggest starting your own thread, instead of hijacking someone else's unrelated thread.

When you do so provide as much detail as possible about the situation. Including but not limited to the device you are using, model, and any other relevant details.