Refused UK visa for the second time due to lack of ties. What are my options?

You applied for a Standard Visitor Visa and were refused. Normally we need to see a scan of the refusal notice because the person contemplates fixing the problems but first needs help interpreting the refusal grounds.

You are asking about how to make a complaint.

Who do I Complain to ?

You can always complain to their executive offices on Marsham Street. I have done this before and and can attest that they will not entertain complaints dealing with individual cases; instead the complaint needs to raise a global concern like when the biometric servers crashed for more than a week. In your case you will get back a boiler-plate letter explaining that you need to make a fresh application. But certainly nothing prevents your drafting and sending a complaint directly to them...

The Home Secretary
Policy Unit
2 Marsham Street
London, United Kingdom
SW1P 4DF

Secondarily, UKVI operates a subsidiary complaints procedure within the Home Office and they take incoming complaints very seriously. Their policy is to segregate the complaints streams from the operational streams (that's a good thing) so as to prevent conflicts of interest and corruption. There's a guidance page here. You will get back a boiler-plate letter explaining that you need to make a fresh application.

Your next question...

My father suggested to write a letter explaining everything to the British embassy in Algiers

This will also work; there is a British Consulate General in Algiers. They will log it and then segregate it from the operational stream for further handling. You will then get back a boiler-plate letter explaining that you need to make a fresh application.

As a side note, applications submitted in Algiers are actually sent to Lunar House in Croydon for decision-making! It's part of their hub and spoke programme, but Croydon does not engage the public for Standard Visitor Visas.

Those are your avenues for a complaint.

For your implicit question...

I cried a lot because I want so much to go the Uk to see my place of birth I find it so unfair

Adverse decisions are very disappointing. There's an article here on the site with a section called "I am desperate..." and another one titled "I cannot provide a compelling case" which you may find helpful. It's at Should I submit bank statements when applying for a UK Visa? What do they say about me?

i'm afraid to get a refusal and they might thing I'm crazy about going to the Uk and that I will go and not return

Yes, that's right. Northern Africa has a fairly high risk profile and you will need very stable circumstances in order to be successful the next time.

If you want more substantive help next time(s), you will need to include scans of your refusal notices in a new question.

TSE colleague Michael Hampton (to whom thanks) pointed out here that there is no path of appeal or administrative review for visitor refusals. This is stated explicitly at the bottom of all refusal notices.

Also: for others following this thread, the Chief included Algiers in his 2011 inspection. There were some hits, but overall the inspection cleared up a lot of doubts about UKBI's operation in Africa. The report is here. (I am in the people who admire the Chief's work and see him as one of the "good guys".