yep your clutch is not fully releasing pressureplate could be warped and draging the cluch disc or binding on the inputshaft splines or pilot bearing and causing the gears to roll
now if you can get it into 2nd without grinding it may be better to put it into 2nd that will stop all the gear roll then put it into 1st or reverse
now the big trucks have a clutch brake and that stops the inputshaft rotation so you can get them into gear

i thinkzz traveling along at terminal velocity will soon wear a body out.

i will not die in shame if i never finish my dreams because my family iz my reality

can't wait until we can bed de ponys down, lite de fire, put on a big ol pot of coffee, and talk about how strong and brave our teams are.

bullfoot thinkszzzzzzzzzzz