You might want to read more about Optimization.
For best practice, we highly recommend rocket.net, It’s the fastest WordPress host we have ever seen. I have tested and It’s even faster than Flywheel or any other hosting we have ever tried before. It starts from $25/month if you pay annually and $30/month if you pay monthly.
The biggest benefit of hosting at rocket.net is, It’s fast automatically. Our demo site got 95/100 on mobile and 100/100 on desktop WITHOUT DOING ANYTHING ELSE. We used to pay WP Rocket plugin $59/year for optimization, $7/month for CDN, $10/month for Imagify but with rocket.net, we no longer need them. So honestly I can say this is a steal. I couldn’t stop talking about rocket.net to my friends.
Other hosting options
If you trust wordpress.com more, you can go with wordpress.com business plan ($25/month if you pay annually).
For budget hosting, we recommend using SiteGround. It starts from $3/m for the first year and $18/m from 2nd year. This is also a good option. This docs website is currently hosted on SiteGround.
For other hosting options, I recommend using WP Rocket + Imagify to optimize your site.