It looks like a Chinese elm tree...
but has moss growing with it...
round fairly small leaves
dark green leaves
not many leaves
medium stem
small and
skinny
I doubt anyone will be able to help you without seeing a few pictures of your tree. Instructions for posting pictures here are under New to Helpful Gardener? under Helpful Tips and Suggestions for New Members.
RBG is correct, pictures will go a long way toward you receiving reasonable advice. [url=https://www.helpfulgardener.com/forum/viewtopic.php?t=3724]Look here:[/url]
Next, more information please. [url=ttp://www.helpfulgardener.com/forum/viewtopic.php?t=21636]Look here:[/url]
This thread is locked. Any further discussion re. christy14's bonsai elm (as identified elsewhere) may be continued [url=https://www.helpfulgardener.com/forum/viewtopic.php?t=46251]here[/url].