is my gearbox stuffed?

[5L]

about 3 months ago, i was giving my car a bit and changed from 2nd to 3rd, the bolts on the shifter came loose as i found out when i went from 3rd to 4th. i drove it the rest of the way to work then home again in the morning.

wheni got home i pulled the centre console out and seen it was oonly the bolts that had come loose, that was a big relief tightened them up but then the gear changed felt very harsh, about a month later the bolts came loose again so i tightened it up with loctite and they seem to be holding now.

when i was driving my car last night i kept thinking god this is getting worst, the gearbox feels very stiff and clunks into gears sometimes. generally its not too bad to drive with. it still finds everygear and when in gear feels normal.

has anybody else had this problem, is it my gearbox, or my shifter?