Need advice on google ads landing page

So I need some advice regarding my landing page - https://sasan-marketing.jimdosite.com/

Does it matter to a buyer that the site is using a subdomain? Will that hurt my sales?

Would you buy or contact me after reaching this landing page as a customer from google search ads?

What is an average percentage of sales for every 100 visits?

Any advice on how to get more clicks with good CPC price? Any tricks to increase sales from ads?

What should I change above this landing page to make it more professional?

Any suggestions are appreciated.

Thanks

Does it matter to a buyer that the site is using a subdomain? Will that hurt my sales? << this matters most. You should look professional and with authority.

Contact email on that website is a gmail email address. Potential buyers will run away as fast as they can.
The landing page mentions "Welcome to my landing page ...". Common, it is supposed to be a landing page for a BUSINESS and NOT for a personal blog !!! Sorry to say, doing business, is ONLY AND ONLY about using COMMON SENSE.

On a very general note : Knowledge can be acquired, but common sense CANNOT be acquired. And, in order to "convert" or "transform" one's knowledge into (business) money, common sense is required. In life, generally speaking, not everything is meant to be for everyone and not everyone is meant to be for everything.

I prefer to use site.com than subdomain.site.com for sure.

manu_1992 said:

What is an average percentage of sales for every 100 visits?

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It depends on the keywords that you use, your budget, cpc, your niche.

manu_1992 said:

Any advice on how to get more clicks with good CPC price?

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Just use maximise clicks and indicate maximum bid.