There are some factors which govern the web page speed and the same factors are analysed by google to give PageSpeed rating so the factors you can work towards are:

Switch to better web host:

With cheap hosting plans you get HDD based web space for your website which is very slow in comparison to SDD hosting.Typically SDD hosting can serve your website files up to 10 times faster then traditional HDD web hosting. So, server response time should be very low which can only be achieved by having responsive web host and obviously your website should be coded in a manner so that it is non obtrusive or non blocking (explained in the below point)

Optimization of website:

As mentioned above website elements like CSS, Javascript and other components should not interfere while the user interface is loading. Non critical Css and Javascript should be loaded after the first fold content (content visible in the very top view port) has been loaded or it can be loaded asynchronously.

Lazy Loading:

Lazy loading is an approach to load images or other elements as it is required. You might have seen some websites which load images only when you are getting nearer to the target section of the website. This removes the overhead of loading whole page which a user may not see and goes to another page after viewing the content from the first fold. you might have seen the same effect on the home page my website at https://ambrishpathak.com

CDN:

CDN stands for content delivery network which is a global network of data centers to provide static website resources like CSS, JavaScript, images etc. When a web page is requested by a user then all the static resources are served to the user from the nearest data center which speed up the website and makes the website more responsive. Content Delivery Network is a paid service but there are some providers who offer a free CDN but with limited features.

These are just very high level factors which impact web page loading time and page speed scores. There are many more factors to be optimized in order to have a quick loading website.

You can consult me to get your website analysed and an optimized solution for your specific website.