Download Problems in Unity Hub

Hello everyone,

I am using Unity from few months now and from first day one thing which is very very bad in Unity is Unity Hub. I am having these big issues with Unity Hub:

1. Can't download Modules without a Unity Editor. I already have a Unity version v2019.2 installed and now I just want to download Some modules for the same Unity version. But it's impossible. Why??? Or Am I doing any mistake?

2. Why there is no details of Unity Editor download size? I don't have unlimited data. There must be detailed information while downloading.

3. Worst download system. If for any reason download interrupt for few seconds (Network problem etc.) the whole download start from beginning. Why??? Why there is no pause system? Why Unity not improving these things?

If I am doing any mistake then please tell me how to fix these problems.

Please help me on Downloading right Android sdk, jdk and ndk for my unity version 2019.2.11f1. Thanks.