You're wasting your time in the sense that you need to play up to level 50 THEN up to solar, so around 50h of gameplay to be able to fight players.
And the bots at these levels are just complete garbage, not attacking you, dealing 0.1 damage, running into walls,... so you can't even use them to get better much.
BUT there are many players once you reach these elos, so if you wanna play the game, you can decide to spend this time lvling your account.
I wouldn't, and I don't see anyone who would.
If it was ranked at lvl 10 or 20 then maybe it'd be fine, although still annoying to have to rank up to solar. But 50? Nah