Calling some groups “incel sickos” sounds rude and hateful to me and is best practice for going to be a incel sicko. I don’t want to judge, just a friendly warning.
Against loneliness there are good advices already written. Just an addition: first, be respectful and love to yourself. Second, do the same for others.
A lot of depressed people think, that other people could repair their hearts, but that’s not true. You start by yourself, the rest comes automatic.