Two utilities that may be handy for you here:
Pakrat: Automates and simplifies the process of creating alliases for flatpaks, good if you just need to make a few programs be simplified
Fuzzpak: Lets you do fuzzy searches for flatpaks(as in you just write fuzzpak inkscape and it auto looks for something with inkscape in the flatpak folder and launches it), good for when you want to simplify launching flatpaks in general without doing the process of configuring stuff manually
This is probably the best resource for keeping track of which search engine options exist and what their quality is like: https://seirdy.one/posts/2021/03/10/search-engines-with-own-indexes
For a “fire and forget” option that doesnt require any configuration you cant go wrong with good ol DuckDuckGo: https://duckduckgo.com
If you’re okay with dealing with more configuration and breakage then Searx can be pretty powerful as its a metasearch engine that can search with every search engine you tell it at once and agregate the results(while proxying things to maintain privacy): https://searx.space (had decent luck with the https://search.sapti.me instance if you just wanna try it out without searching through a list of options)
Also all search engines are kinda bad due to SEO spam and “AI” generated images and articles polluting the results, consider using uBlacklist to help you filter out the trash from search results(think of it like ublock origin for search engine results), can use it for basically any search engine so no reason to not set it up: https://github.com/iorate/ublacklist