I've been loading motorcycles onto my pick up for over two decades with the same aluminum ramp.
I mostly used the engine power to get the moto up the ramp and into the bed of my pickup, just walk along the moto with another ramp or just a milk crate to step up.
Having a hill (even a very slight hill) would help greatly with the loading up the ramp.
If you're not folding it, just loading into a pickup, I find an easy way is to position the bike aligned parallel with the tailgate and the rear wheel about middle of the tailgate. Hold the rear brake handle, pull up on the handle bar, then swivel the front wheel onto the tailgate/truck body/minivan floor. Front wheel is in, lift back wheel in and you're done (a second person would help too). If you're loading in a minivan you will have to fold the handle bar before moving bike totally into the minivan.