i have a working ytview script on 2018, but this year 2019, YT make its harder so its really hard for me alone to find a new works script.
i am not sure about bot and proxies because i never had it working
what i do to have high retention views is added music to my video and brief and catchy a viewers to watching my video till finish and a tools from a youtube panel like add card and end screen also helps to increase watch time. maybe you should try that first. so you will get real human watch