No power going to the wheels

Try putting it in to gear with the car switched off if it goes in easy it sounds like you have a clutch fault have you had a new clutch or anything done to it

you could be getting clutch slip. to test for this park front wheels in front of a curb. then try to climb the curb. if it just spins and not climb them the clutch will need replacing. should climb easy up the curb. this is just a test don't put foot down to get up the curb.if engine stals just try again but engine staling is a good sign.

Try to double clutch when you downshift from 2nd to 1st ( while driving be in 2nd put in the clutch go to neutral pull out clutch rev it a lil and put the clutch back in and then shift to first) what this does is that it aligns the gears and it might go into 1st alot smoother. Happened to my 86 Toyota and never had problem with it after that

It sounds like you have a blown throw out bearing for the clutch operation. Fix it soon or you'll do a whole lot more damage to the drivetrain.

It does sound like your clutch needs replacing. Adjusting the clutch may help but will not solve the problem. If the transmission has not been serviced for a long time it is a good idea to replace the transmission fluid, inspect the pressure plate. They may also start to wear.

THUMPING NOISE COULD BE BLISTER OR BUMP ON THE TIRE,IMPROPER SHOCK ABSORBER OR STRUT DAMPER ACTION.

EITHER YOUR CLUCH IS WORN OR THE SLAVE CYLINDER GAVE OUT.. CHECK THE FLUID LEVEL ON THE SLAVE CYLINDER RESERVOIR OR TO BE MORE SURE WHAT IT IS. DO THIS-
BE SURE NO ONE IS IN FRONT OR YOUR NOT GONNA HIT A CAR IN FRONT / WITH THE ENGINE OFF "IGN" ON PUT IT IN 1ST OR 2ND GEAR IT MIGHT BE A LITTLE TRICKY OR ROCK THE CAR WITH ONE LEG MAKE SURE IT GOES IN GEAR. THEN PRESS THE CLUTCH AND TRY STARTING IT IF TRYIES TO TAKE OFF IN GEAR THEN YOUR CLUTCH IS GOOD/ BUT THE SLAVE CYLINDER OR THE A HOSE LEAKED THE FLUID. IF IT STARTS IN YOUR IN GEAR AND THE CAR DONT TAKE OFF THEN ITS YOUR CLUTCH FOR THAT YOU NEED A NEW CLUTCH AND REMOVE THE TRANSMISSION. LET ME KNOW OR SEND ME A FEEDBACK THANSK HOPE THIS HELPS YOU.

the sensor magnet wheel in the output shaft of the tranny can be sliiping on the shaft but!! due to it being a 2001 model you more than likely ahve internal clutch pack issues and bad worn or burnt clutch disk that tranny will not perform with severe internal damage

Sounds like one of the CV shafts is broken.

check slave cylinder