Gewerbe in UG

Hello, dear, I am interested in whether I can cancel the six-month old “gewerbe” becouse job what I have for that gewerbe is broke, and because off Activities what I think to working now in new situation dont have registred in gewerbe. I certainly think that it is easier for me to establish a UG because I do building assembly, solar systems, as well as transport and construction work… I thank you for I will answer in advance and please contact me if someone who speaks English or Croatian can contact me, because unfortunately my German is not yet good enough… Or please make an appointment by invitation and I will organize a colleague who speaks very good German to be with me so that we can have a conversation and find a solution and your recommendations and to you Carry out and finish my problem as you say to do. Of course, I would let you do all the necessary actions for me. Thank you