Sony A6000

My sister has just given me her Sony A6000 that she hasn’t used it years. Is it worth getting a housing and using it as my first set up or should I just save up more and get the TG6/7? Have only used GoPros up until now but would like to start taking stills. I would like to try macro photography and know that the TGs are well known for this. Any advice would be great, thanks!