Aggressive bot

Not really, is because bubble strat with gastlys, is being exploited and used 99% of the time by only spoofers

So nothing to do until gym rework for see if they change some stuff

You are just unlucky. Most players never get this or just don't play enough to realise. When you do there is no fighting it. My advise is to give up. I have been waiting for 6 mo the for something to be done but honestly I just don't think anything will change. Every week or so I log in here to see if cheats are finally banned. I don't bother with local gyms any more as it is impossible and I stick to my own teams spoofed gyms in other areas. Truth is from what I can tell all stable gyms are spoofed and or boted. Good luck though.

Screenshot and report the accounts to Niantic. I have read many other players having success getting obvious cheeters banned.

I see the from time to time and now I just roll with it.

I find gyms that are botted or spoofed from my own team and just defend those. Its a pain in the ass that Instinct spoofers/botters are slowly taking over my area.