Toilet blockage

If you only have two rods you still have far to go. I'd have said ten was a minimum and most sets you buy are 12. Rods are old money so 3 ft long. You should be able to calculate the distance to the toilet and know roughly how many you need. Sets on Amazon run at around £25 or less for 12 rods and a worm and plunger. Think you need to spend the £25?

What attachments do you have? A worm is the most useful but a rubber plunger can be handy when working down stream of the blockage to work back and forwards to create suction. Do take it easy though I've had a worm screwed hard into roots which can get embarrassing when it won't come out. If you hit something solid try not to screw the worm too hard into the blockage. Push the worm into the blockage give it a quarter turn the pull back while you keep turning clockwise. Keep that up rather than just screwing the worm in. If you are only using a max of 7 rods then also be careful not to be overly energetic, the less rods you use the more power you can transfer to the end. Its possible to hit a junction underground and use enough force on the rods to smash the pipe or open joints up (yeah I've done that too).

Safest option is to push up the rods with no attachments first and feel whats in the pipe a wheel attachment on the end can help. Its a bore but when you take them out unscrew each one in turn - all the while making sure the rods in the pipe are kept turning clockwise. Having a load of joined rods trashing around outside the pipe is a good way to loose one in the pipe. If you want to be really safe then try next with a rubber plunger before using the worm only if you have to. With the plunger work the full length of each new rod you attach back and forward a few times before adding another. I used to use a lot of old rods and attachments and most of the new worm attachments have a far too aggressive screw on the end that can easily get stuck. The scraper attachment (hinged half a disk) is also dangerous and can get stuck on badly made joints - if that happens keep tuning and try pulling back at every 1/4 of a turn.

Apologies if I'm teaching granny to suck eggs but we have had a few threads from people with rods lost down drains.

Checkout the price of a full set often its the same price as buying few individual rods. For the price of 3 rods in screwfix you can buy a set of 12 on Amazon.

Look for puddling around the access cover and follow your nose. Sewer blockages usually give a bad odour.

Are you sure the issue is not with the toilet?

Sometimes slow emptying of the bowl is caused by insufficient flush. Does the cistern refill normally?

Still sounds like the toilet rather than the drains to me.

Lidl toilet roll is the worst offender for blocking toilets around here.