How to make algorithms and block diagram in xmind? Perhaps there are better services?

Question

block diagram

Hello everyone guys. In Xmind I can't figure out how to create such block diagrams
In a regular program there is a section new => Templates

I tried in different ways, nothing works, it turns out like this:

Is this a limitation of the free version? If you know how to make such block diagrams please tell me I will be very grateful. Or maybe there is some special software for this? Thank you!

Answer 1

For example:
https://www.draw.io/ - I use this, I like it more, quite flexible and convenient
https://www.lucidchart.com/