Solve message sending issue

Hi. For a while I have been interested in the LoRa modules. The work of such a large community is very exciting.
I’m using Meshtastic 2.0, and I have 2 modules of T3 V1.6.1
I’m doing some experiments with the application and I noticed this;
The messages I send doesn’t goes in order (also one after one), and most of them doesn’t haven’t been sent. Also the messages I’m sending is not going in regular order - it’s going partly. I need to notice that I send the messages one after the other, but the cloud is crossed out (like it haven’t send the message). I wonder how the message queue is, why is it skipping? Maybe we don’t send messages over and over under normal conditions, but I want to understand this issue. I would be very glad if you guys can help me.