Yeah, Merry Christmas to you too, but the only one of those that will work for sure is to get a better ISP plan, if it is available.
Range extenders, meh, I'd first go with an access point and a CAT5e cable run to the poor connection area.
It doesn't help to upgrade your adapter, if your wireless router or AP doesn't have equal speed and the same goes the other way. Also, it does no good to have a nice dual band simultaneous router if you are running an old security type that will limit you to 54Mbps -- you need to use WPA2 personal with AES encryption.
Fixcleaner is totally unnecessary and a waste of money IMO, just learn to not load every piece of junk that comes along, like with those Adobe updates. A good antivirus is useful, but staying away from bad places and torrents is more useful.