Hello and welcome to the forum.
I'm new to the Bonsai community and also, I'm young and inexperienced in this Japanese art so I don't know much.
We all had to start somewhere so don't be discouraged. It has been said that in bonsai the young have the time but no patience and the old have patience but little time. If you start young you have a lifetime to learn.
I too began at an early age but unfortunately I did not stick with it uninterrupted over the years. This is my third go round with bonsai and due to the guidance I gained on-line I feel that I finally am getting somewhere.
A lot of what was once taken as gospel has changed over time, soil, watering and fertilizing to name just a few. For instance modern bonsai practice almost universally eschews the use of any garden soil in pots. So that is one area in which you have already made a misstep. Watering is another, you cannot rely upon rain as the sole source of water for you plants.
Had you inquired beforehand we would have discussed proper soils.
I'm not very clear with the soil. Their not really at the pruning and styling age so yeah... I don't know if I should put them into the Bonsai type soil yet.
The development of the plant is not the point, once they are in pots drainage becomes paramount. Read this to understand [url=https://www.evergreengardenworks.com/earthpot.htm]why the earth is not like a pot.[/url]
In fact read everything [url=https://www.evergreengardenworks.com/articles.htm]here[/url] that applies and pretty much everything [url=https://www.bonsai4me.com/Basics.html]here[/url] as well.
You will, of course, not be able to digest this material in one day, one week or even a year but focus on the obvious first, watering, soil, re-potting, over-wintering, etc. When you have specific questions we will do our best to help.
Know that you will lose plants, it is inevitable. Don't take it as a failure but look upon it as an opportunity to learn. One more thing, bonsai is as much about the journey as the destination, enjoy the process.
Would you please be a little more specific WRT your location and post some pictures in order to allow the possibility of an identification.