Brother ls 2020, 3 dials for tension, ALL I WANT TO DO IS MEND. what is the # just for mending? why are these machines so hard to work?

A manual may help:

User Guide Manuals LS 2020 Others Brother

There is only one tension dial, the round knob above the needle. Standard setting is the midway point between high & low number. The other two knobs are the stitch length and stitch width dials. With the stitch length knob, zero will make the machine sew in the same place, so you'll want to set it probably midway (the higher the number, the longer the stitch). With the stitch width dial, zero will sew a straight stitch--the higher the number the wider the stitch). Spend about 30 minutes reading the manual and you'll probably be able to use your machine. ALWAYS RAISE the presser foot when threading the top thread so the thread will seat properly.

A video may also be helpful:

https://www.youtube.com/watch?v=UC4ci-t5M60

RELAX!!!

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