Alone

I'm of the persons that thought " is better alone" because I can to meet myself, and I don't give explications to nobody , and too I think it's not necesary have to someone for be happy.

To make it very literally :

Loneliness 

I am  the person of loneliness. Because I can deal with everything alone, no one to any explanation and don't need anybody to be happy.

Alone

I'm of the persons that thought " is better alone" because I can to meet myself, and I don't give explications to nobody , and too I think it's not necesary have to someone for be happy.

I'm one of those people who think/believe that they are 'better alone', because I can look after myself, and I don't have to explain myself to anyone, and also I don't think it is necessary to be with someone to be happy.

Alone

I'm one of the persons (the normal plural of 'person' is 'people') those people that think it (present tense) thought " is better to live/be alone/single, because I can to meet myself, and I don't need to give explications/explanations (explications is ok, but not normally used except for formal explanations) to nobody anybody (following 'dont' you use 'anybody', not 'nobody'), and too I also think it's not necessary have to anyone (again after a negative 'not', use anybody) for happiness/to be happy.

Sorry for so many explanations (explications haha) in such a shoprt passage!