You still need to find a suitable pole / rod and get some bait.
To use an aluminum tube, you will need something to punch a hole into the end of the tubing with or sap from a tree for glue or the string will slip off the end of the pipe. You could search the trees for a suitable stick, onto which you can securely tie the string. There are options, but they must be reasonably realistic.
Crafting is NOT considered an action. Nor is consuming potions. You may craft at any time.
You still need to find a suitable pole / rod and get some bait.
To use an aluminum tube, you will need something to punch a hole into the end of the tubing with or sap from a tree for glue or the string will slip off the end of the pipe. You could search the trees for a suitable stick, onto which you can securely tie the string. There are options, but they must be reasonably realistic.