Well yes you can go without it to a certain extent, schematic data can be done without it and just use the built in page title page description etc that site designer has in the page manager section.

For a lot of websites that's as good as you need to get up on the results pages, but it still needs constant analysts checking tweeting wherever and whenever necessary. I tell all of the people I have helped build a website cc users and others that once a website is up and running that's when the work really begins. Even doing it as a hobby.

Hello, Wayan! I hope you're having a great day, and I wish you luck in everything! If it’s not too much trouble, could you take a look at my website again when you have some free time? I’ve fixed all the mistakes, and I’d love to know how well I did. By the way, I was an average student in school, but I’m not ashamed of it because I just wasn’t interested in studying — you could say I was sick of everything school-related. But now the world is different, and I’ve changed too. So, I hope I’ve fixed everything well

P.S. Вот перевод на испанский:

No estoy seguro de la precisión de la traducción de esta inteligencia artificial, aunque dicen que traduce bien del español.

Sure thing will do.
I hated school hen I was young but then at 16 years old we moved to a new city because of my father's work, I went to a new school and the teachers were incredible totally different way, they made classes interesting, they involved us as individuals if we wanted to learn if not they left those students to themselves. It was the woodwork teacher who suddenly light the flame of understanding and the fire of knowledge withing burst into flames, I went to university in Scotland a(much to my father's surprise, my mom secretly knew that i was capable) I graduated with 2 degrees, and started my dream my passion for art and design. (There is another story inside for another day. ) here I am some 50 odd years still loving and living my dream my vision my passion.
I am going to be busy today when the new dawn arrives but will have a look later.

Just had a quick look at the website (home page only)as the orange dawn of a new day peaks from behind our neighbour the volcano,

You have fixed the issues that were causing the error report, BUT caused some serious WARNING ERRORS specifically with your canonical attempts.
the attribute in the rel ='alternate' is not a valid attribute so basically because browsers don't understand the canonical declaration is ignored and the bad attribute results in a serious warning.

There are still `10' more that need addressing, however because they involve security issues, and this is an open forum (even though CC admin and the moderators try to remove possible spammers, some may on occasions slip through the net. It may not be wise to list them on this forum.

You already use Google 's analytical data thingy, so you should be able to use that dashboard to find the remaining warnings and the actions needed (if any) to resolve them.