I see that you bought the Philips SDV2210 set top antenna. Living on the south side as you do is a good thing, because you are more close to the TV transmitters than viewers living on the north side. While reading the literature for your antenna - and there isn't very much - I could not tell whether the UHF element (the boxy-looking part that folds up/down from the base) can be rotated left or right when it is in the "up" position. If it can be turned (and I believe it can be,) here is a method you can try to improve reception. Oh, if that UHF loop can't be turned in its base, you can just rotate the whole antenna base itself to get the same results.
Your Insignia TV should have a feature that allows you to check signal strength. It may be a button on the remote control or it may be buried in a menu. Once you have found the feature that permits checking signal strength, tune your TV to KSAT-DT, channel 12-1 or KABB-DT, 29-1. the KSAT and KABB transmitters are very close to KENS and WOAI. Now select the signal strength feature on the TV and slowly rotate the UHF loop (you know, the boxy-looking part) or the antenna base until you get the best indication of signal. TV sets differ in how this is shown. Some have a horizontal bar that increases from left to right as the signal improves. Others may have "bars" like a cell phone to indicate the signal level. Experiment with this. You may need to step away from the TV antenna to make sure your body is not affecting the signal. Since your antenna has "fine tuning" you might try that feature to increase the signal as well.
Once you have the best signal possible on channel 12-1 or 29-1, go into your TV set menu and choose the option that scans or memorizes channels. You should now receive KENS and WOAI along with KSAT, KABB, KWEX, KNIC and KVDA. You may also receive KMYS, even though it is in the opposite direction from the rest of the stations.
PBS might be a little more difficult, since they are operating at lower power than they would like. To tune in KLRN (PBS) you will need to force the TV to channel 9-1 by keying in the channel on your remote. Set up the signal strength feature again and this time, move the rabbit ear rods (that's the VHF part of your antenna) to see if you get any improvement in the signal. Do not change the position of the UHF loop or move the base of the antenna or you may lose the channels you have just tuned in. You should pick up KLRN after some experimentation with the rods. You might try the "fine tuning" feature on your antenna again. Before you change the fine tuning, remember the setting so that you can return to it when you want to. Once you have gotten a good signal on KLRN, re-scan or memorize channels again to get the PBS station in your lineup.
Let me know how this works for you. Given your location you should not need an amplified antenna, but I cannot know what might be between you and a clear shot at the TV towers. If these steps are successful you will be in good shape.