If you can afford your Paid premium membership each month. I would suggest you invest in a dot com website. To purchase your own domain name it costs only $13.99 for one year and is renewable for the same cost.

You can purchase your dot com domain name through WA.
https://my.wealthyaffiliate.com/websites/build.

You can MOVE your free siterubix.com website to a dot com website. All content, images theme, and setting MOVE. Move On Over, My Brand Has Arrived

I believe you can have success with a siterubix domain.

Yes you can be successful, but it will largely depend on you. Will you grind through the training and be consistent? Nothing is built over night and there are some things that you must get right like finding the right niche and producing content for it.
A website is your intellectual property and just like any other property it requires attention and maintenance.
Good luck Haronn you can do it!

Sure, it works with a free domain as long as you write great content. Granted, when you have the budget and time to upgrade for a dot com, you have to. This is where your professional blogger life comes into the picture. Got it? :)

With that having said, I'd like to reiterate what others have said here. When it comes to creating great content, you have to consider high-quality, error-free content. So, if you want to progress in blogging, you have to make sure you provide impressive skills to your target market. Your readers and potential clients and/or customers.

I'd like to suggest you go through my WA post about creating killer content and make sure you make it a habit to impress everyone. You may have a free domain, but doesn't mean you make it as an excuse of creating a crap to your audience.

I will leave you a few stuff as a jumpstart: 10 Must-Haves For A Killer Blog Post Siterubix sites can get traffic. Boy can they get traffic. https://mgaspary.com/james-charles-drama/

Looking forward to your progress. Let's keep in touch :)

Whether the site is free or not doesn't determine your success, but what does is your commitment, you work ethics and LOTS of patience. Like how @reta4321 mentioned, your site will still index in Google if you have relevant articles and you build trust with your audience.
Also utilize Wealthy Affiliate and the good ol' internet for your need-to-know on website building and marketing.
Good luck on your journey to success!!!

Yes, you can Haroon, however, I am going to make a suggestion to use an app for spelling corrections like Grammarly for your posts and blogs. The I in your sentence above should have been a capital I. Good luck

WOW! thank you so much for the fast reply, you have given me a lot of hope and motivation because i thought i wont be able to do it with a free domain. I will keep working hard towards my goals! thank you.

Yes, you certainly can. I was just looking at a site.rubix.com site last week that is ranked on the First page of Google.

Once you start generating income you can always upgrade to Premium at that time.

To Your Success!

Mel