Gracias Laura y Javier, quiero comprender como puedo usar "todo" aqui. Por ejemplo; Tengo para todos Si es correcto, podemos decir "todo que yo siento" es posible? Por que se usan "lo que"?

Japanese language is not like English, Spanish or Chinese in terms of speakers population and it might not be too handy language if you do not live in Japan or you do not like Japanese cultures that much. It is really up to you but I may know why you are wondering for some reasons. In my personal experience in my life for whole things, maybe it would be also an idea to put thisJapanese learning off, invest your time on some other languages or other activities. Your knowledge and how you learnt will be your asset in doing anything :) If you want to learn Japanese again, you can start again :) There is no rule or anything but I think it is best to do things with your passion :) good luck :)

I think you are right if my understanding correct on your question. 自分の国に帰った時に買います=I (normally) buy it when I go back to my country. 自分の国に帰った時に買いました=I bought it when I went back to my country. So it is same as English. First sentence represents your habit so it should be present tense.

ばんごはん

今ピザを食べています。私はピザが大好きです。とても美味しいです

Well done :)