Charging Alcatel OneTouch PIXI 3 with Damaged USB: Alternatives and Potential Risks

I have an Alcatel OneTouch PIXI 3 tablet. I have a damaged USB port, which means that it cannot be charged. As he moves the cable, from time to time, information pops up that he is loading. I can't move the cable like that for the whole 4-5 hours. I opened the reptile and this is what I found.
1. Three cables: + red, - black, white I don't know what for.
2. Two 3.8 V and 2050 mAh batteries.

Can I connect plus connected 3x 1.2 V batteries and something mAh?
Serially they will have 3.6 V. I would charge them first! That's an idea because I don't know how I can charge it differently! Will it work after connecting a 5V charger from NOKII to these cables? (In the charger which is + and which is -? Charger with round tip).

Please help!!!!! I am asking for professional advice, will it work or will I not destroy anything ?!

Replace the damaged socket, maybe you just need to solder it.

I prefer not to risk with a soldering iron. There are also such ribbons: how to disconnect them? Write or provide a link to the demonstration video, please. Maybe I'll try to do something.

If you are afraid to do anything, give it to the service
Or buy yourself the LI-ION TP4056 Battery Charger and charge through this system.

Of course, you'll have to stuff it somehow into the housing or lead the cables out, but it's only for charging the tablet's contact with the PC rather through the original socket, no different.
Either way, I bet you give it to the service or give it to someone who knows about it.

OK And after describing the damage, what else can I do? Before I give it to a service technician. And how much can such repair cost? Thanks for the hints.

The cost of the item, unless you have to replace it plus labor on the site should tell you how much they call for it.

Today the charger was connected to the tablet, yesterday came mail. Loading from 12:05 and at 17:15 there were 87%. I connected it to the cables going to the battery and NOW. Soon photo from repair.

Here is the repair photo
https://obrazki.elektroda.pl/1855010700_1507915217.jpg

Added after 2 [hours] 48 [minutes]:

Cables soldered to the + and - power cables, flooded with hot glue and a piece of the housing cut out to fit everything. LI-ION TP4056 battery charger glued to the housing with hot glue (great invention). USB charger from NOKIA 5V phone and guitar. On an activated tablet it does not show charging, as it is almost discharged at 3 or 2% it does not show anyway. But when I turn it off / on it is only 87%, the charger with red net is blue.