1994-older the lever has very little to directly do with high/low beam operation - it operates a remote switch via a rod inside the column. The switch is down low closer to the firewall. If your column is tilt and has slop in the tilt joint, that can cause problems, and also the switch itself can go bad.
See the blue socket - that's the high/low beam switch. If you decide to replace it, first tape the rod into place in that exposed section above the steering column bracket, so that it can't fall out of place inside the column while you have the switch loose.
If you have a loose tilt column, you need to tighten it up before it gets worse. Plenty of video how-to's on that if you search youtube.
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Richard