need help depression and with negative thoughts

hello. i have had depression for a year now and have had no improvement and now i just get a lot of thoughts. i am really embarssed to even mention this but i just feel like i will always been lonely in my life and i will never find a partner or best friend. i just never go outside and i am really shy(i am a introvert) and my thoughts seem to really get the best of me :( please help me to fight depression or get rid of these thoughts. i also get many negative thoughts like i am worthless. no one likes me and i am a loser. and i don't want these thougts anymore. please help me :(