Redirect LAN traffic to external proxy server

Hello,

This is my network scenario:

My LAN (192.168.1.0/24) has 10 PCs with Windows installed. All of those has Firefox browsers. I have an external Squid proxy server configured into another machine (Debian 10) and it has public IP (i.e. 201.134.xx.xx).

I want my LAN PCs traffic (HTTP and HTTPS) should go through that external Squid proxy server. So that I don’t need to configure browser manually to use proxy.
How to accomplish that into MikroTik Router?

Note: I tried to do that with dst-nat rule in Firewall, but it’s not working. Proxy server showing error instead of opening web pages.

Please do not multi-post same issue.
For those following the thread is here…
http://forum.mikrotik.com/t/issue-with-dst-nat-routeros-6-47-10/149730/1