If you have either of the Bedrock Realms subscriptions, here's how to make a world. Step 1: Select Play. Step 2: Select Create New. Step 3: Select Create New World. Step 4: Configure the world. Step 5 ...
NOTE: Yes, I require you to have quite a bit of technical knowledge when it comes to Java and other things such as that. As well as folder locations, unzipping, how jars/modding works in Minecraft, ...