Toyota Hilux shuts down badly, setting coupling?

Hello together, with my Toyota Hilux Bj.2017 the following worse problem with my manual clutch, if I want to switch from Neutral to the first gear, it goes extremely hard in, the subsequent gears flood then. The problem has now slowly become worse over the last half year, yesterday so bad that I often needed three runs at the traffic light until he was in it. A few times also slipped into the reverse gear because I had to push and beat so. If he rolls it goes a bit better. I have the feeling that the clutch does not separate properly but can you adjust the clutch path? Does someone know the problem or maybe also what you can do (except to run into the workshop) ? Of course have excluded the most obvious problems like foot mat or false shoes. Thanks already and greetings, Nik