You know.... the super easy solution is to NOT use the crappy apps built into the TV!
A Roku Premiere (4K HDR) is only $39!
$39!!!
You then don't have to deal with the crappy WebOS at all. Have access to every streaming service that is available. And even the shortcuts to specific services from the remote.

If you want to get fancy, the Roku Ultra is only $99 and adds a zipper interface. Dolby Vision support, and a few other things. And is small enough to still stick to the back of the TV if you like.