I'm sorry you don't like your hair cuts, but clippers, like scissors, are just a tool.
IMO thick or curly hair is always best cut dry and washed after. The hair changes way too much when wet to get a realistic idea of what it will look like when done if you wash it first. If time and patience were infinite, sure, maybe, wash and treat curly hair first, but it has to then be fully dry and it has to dry slowly without blowdrying before cutting because it completely changes shape and size between wet and dry.
For short hair or for someone who wants it styled, I'd agree that curly hair should be dry when cut.
I'm not PP but I'm a dude with long, curly hair and I just want an even trim, so it's much better if my hair is wet.
(Also, shampoo is harder on curly hair than straight hair; "wash" curly hair with water every day and use some conditioner, and only use shampoo if it feels dirty. That may only be once week or two, maybe once a month if the hair is short. Yes, really.)
IMO thick or curly hair is always best cut dry and washed after. The hair changes way too much when wet to get a realistic idea of what it will look like when done if you wash it first. If time and patience were infinite, sure, maybe, wash and treat curly hair first, but it has to then be fully dry and it has to dry slowly without blowdrying before cutting because it completely changes shape and size between wet and dry.