Playing with 2 Android tablets Minecraft together in one world without Microsoft accounts?

We have 2 Android tablets on which Minecraft is installed but NO Microsoft accounts. How can we play together in one world?

Our tablets are logged into our network at home, on the go in the same cell phone hotspot.

We would be very happy about a solution, because we have already watched many YouTube videos - but nothing was applicable. Warm greetings from the beautiful Västra Götaland

Creating a Microsoft account takes a minute and would solve your problem 🤷♂️

I understand - since my children are only 8 years old - I'm simply afraid of who is communicating with them. Therefore I'm looking for a solution without a chat facility.

So in Minecraft I only have a little bit of knowledge (the last time I played a good 10 years ago) but there were servers that you could create and then invite people who are on the same network. But I do not know exactly the best look at some videos about Monecraft Server.