Pr_CONNECT_RESET-ERROR

Please fix this issue why i receive this error on different websites?secure connection failed.
Why i get this error even when i use cloudflare DNS and DNS over https or tls?
Why i get this error on websites which are blocked in my country by telecom authority.
Please make sure no one is tempering with your DNS servers which are hosted in my country by main and biggest ISP because sometimes i get DNS leak error when i test through different DNS leak test websites.
Why cloudflare is cooperating with telecom authority in my country to block website access?(assumption of cooperation)

after reporting last time websites started working but this error is back again