How can I bet from Bulgaria?

VPN

VPN doesn't work, as in the moment when I log in, I can see any event.

who are you trying to bet with?  Some sites eg b365 have a list of vpn ip addresses and block them.

its cheaper not to bet 4valeri otherwise come to england get a job and bet to your hearts content, i find it really puzzling that a lot of countries block betfair

Try Betd@q, Sm@rkets or M@tchbook if you're having no luck with Betfair.