How can I improve this situation?

I'm really depressed, mostly because I feel lonely. I've ben suffering from depression for around 8 years now.

I go to tech school all week and work both days of the weekend. I get home from tech school around 5pm due to riding the bus but have very varied work schedules on wekends.

I have some friends in tech school but mostly just do small talk with them when w hang out at school or go somewhere for lunch. I talk to people at work but not asmuch as pople at school since we need to be working and talking to them about some of the things I talk to pople at school about is not professional you know? Just not as close to them as people at school and that's saying something.

Can't go into detail withmy loneliness or depression with family because they don't understand. They always just dismiss me and tell me to just change my mindset and focus on more positive things or drink or something like that. I do my bst to keep a positive mindset but depression still creeps up on me and effects me everyday.

Life just feels meaningless . I'm trying to find meaning but the urge to just give up because of how tired I am keeps getting to me. I can't give up for the sake of my mom and nephews who would be filled with grief but I can't find hope . ..

I hate to sound whiney, but what can I do? Thank you.