There is a big tree on the right of the entrance to the shop. Excuse me, what's the feng shui like here?

It depends on how far it is from the door. According to what you have provided, if it is within five meters, the house will have good luck, which should cause disputes or affect the health of family members. You said that you are 43 years old and have no idea about Feng Shui, because there seems to be a mistake in telling you the age of Feng Shui. So, I can only answer so much, look at the answers of other experts!