Very need inbuilt Official Free VPN Firefox like Opera browser have. Please do Free VPN Firefox if you can

If you can please do Free VPN Firefox its a most needed functions. Addons do not count, they are all paid, with trial period and very bad speed.
Im many years use Firefox but now I must use opera because opera have inbuilt VPN. All VPN what i found here in addon firefox is paid and with bad speed. Many people from Ukraine switched from firefox on opera when the Ukrainian president began blocking many popular sites. Thanks.