I am a full blown screen addict. Screens and devices have basically been my life since I was very young. It's too late for me but I hope interventions and support while people are young will give them the skills and abilities to manage computer and device usage effectively when they grow older.
I don’t want to push anything on you, but it’s far from “too late”. Neuroplasticity is a thing in the worst cass but there are also other things to consider.
Some physical conditions can be addiction inducing. Also - some form of anxieties induce escapism that can manifest through usage. There’s ADHD that (in some instances) seeks constant stimulation and, for example, create tendency of having everywhere phone companion and many autism related conditions that are attracted by hypnotic effect of screens in general.
If you want your behavior to change, I’m very confident you can, but you need to contact the specialist.
Neither ADHD nor autism-spectrum disorders, for example, aren’t treatable by psychotherapy. Many try, fail to change and then get into the false belief they’re lost cause.
If you want to change anything in your life we have today a lot of knowledge and specialists that can aid you in process.
But if you don’t and it’s not disruptive to your lifestyle - why worry?