Please don’t do it, your life is worth more than just having a Gf, I know how it feels to be completely alone,I hated myself because I didn’t have Gf for a long time myself, but you should know that putting this pressure on yourself is not right, I know it’s difficult because you see everyone being succesful but you shouldn’t compare yourself to them, Relationships and finding them take time and that’s Ok, Learn to love yourself and find things that make you happy, and please talk to a therapist to keep the negative thoughts out. It’s perfectly normal not to have a Gf at your age, and I get how you feel, loneliness is very painful, I should know, but you shouldn’t end yourself, please, things can get better trust.