I use a plunger. All the techs used plungers in production. Nothing sucks solder out of a PC board hole better than a plunger.
I still have the one I bought 20 years ago. I don't use it much. Better to take the time to do it right the first time than to suck solder.
Really, have some patience, don't be inna rush. Read the instruction, verify the part, position the part, read the instruction again, look at the picture and visually verify, read the instruction again to make sure you have to solder and there are no more connections to do.
Then solder the part.
If this sounds like a lotta work and takes too much time, think about the time required to unsolder the wrong connection, hopefully you don't damage any part in the process, clean up the crap and do it right.
If you do damage a part, highly likely 'cause it takes way more heat to unsolder than solder, you need to get a new part. In the time that takes you could be listening to glorious music instead of posting here re "why don't my kit work"
Avoid rework, take your time, do it right the first time.
Patience -