Sallymelek Plesk looks appealing, will it be easy for me too?
Yes - and even if it isn't, there's help on Metabullet - see https://metabullet.com/d/16-ionos-hosting/113
Sallymelek From your experience what to recommend me for the long run? (From FB groups, i also have people recommending runcloud.io and gridpane - which very pricey & wordpress only)
Most of this really depends on where you want to concentrate your business. For example, if all of your sites are based in one location (and equally accessed from), it makes sense for the server to be in that same location, or at the very least, in close proximity. However, given technologies such as Caching, HTTP2, Websockets, and Cloudflare (CDN), location matter much less if the content is static, and only presents issues in terms of speed if you include a login section for example, or something that requires no caching.
Again, if you are using WordPress, I'd strongly recommend WP-Rocket. It's not free, but it's worth every penny. It also interacts well with Cloudflare, and a variety of other caching engines such as Varnish / Redis.
There's a good guide here https://wp-rocket.me/blog/redis-object-caching/
Dependant also on how many sites you want to host, you'll also need to bear in mind the requirement for adequate RAM and CPU sockets. My recommendation at this stage is to go for a VPS. AWS would work well, and you can certainly ask @mikejones about his experiences, as I know he does the same. The real issue with AWS is the cost - it'll easily spiral out of control if you don't manage it properly. Google Cloud works in exactly the same way. If you want to manage small WordPress based sites, you can do this fairly easily with AWS Lightsail.
Location, location, location - it's key to what you are looking to do. You can have the most powerful server in the world, but if the location is poorly chosen, latency is going to kill any chance of business you may have - bear in mind that the average site should load in around 1 second. Any more than that, and your user base is likely to hit the back button rather than wait :)