Install a water shut off valve to the toilet (just in case).
I got the Crimp on pex one (I have a pex crimping kit).
LD Valve-1/4 Turn Straight Stop Valve, 3/8-in Compression x 1/2-in PEX,Quarter Turn LF Brass Chrome Plated OD to Straight Pex Shut off Valve for Faucet or Toilet Installation (2-Pack)
https://a.co/d/50ClknJ
The Sharkbite one doesn't require any tools.
SharkBite 1/2 Inch Straight Stop x 7/8 Inch Ballcock Click Seal Toilet Connector x 16 Inch, Push to Connect Brass Plumbing Fitting, PEX Pipe, Copper, CPVC, PE-RT, HDPE, 24686
https://a.co/d/7FVhSo4